Very few planets are _____ because of lack of water and oxygen. A. inhabited B. inhabitant C. inhabitable D. uninhabitab...

DM

Dương Minh

10 tháng 7 2019

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30. Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of...

Đọc tiếp

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30.

Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energy. As food, they fuel our bodies and those of most other creatures. In such forms as oil, gas, and coal, they heat our homes, run our factories and power our cars.

Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. The most common photosynthetic pigment is chlorophyll. The bright green color characteristic of plants is caused by it. Most algae have additional pigments that may mask the green chlorophyll. Because of these pigments, algae may be not only green but brown, red, blue or even black.

In a series of enzyme-controlled reactions, the solar energy captured by chlorophyll and other pigments is used to make simple sugars, with carbon dioxide and water as the raw materials. Carbon dioxide is one of very few carbon- containing molecules not considered to be organic compounds. Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose. The glucose is then used to make other organic compounds. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply.

Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They are called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs. Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs.

(Hooked on TOEFL Reading - LinguaForum)

Which of the following is NOT true?

A. Plants are familiar heterotrophs

B. Plants capture the sun's energy to make sugars.

C. Photosynthesis produces oxygen gas

D. Organic materials contain an amount of energy.

#Mẫu giáo

1

NH

Nguyen Hoang Hai

10 tháng 7 2019

ĐÁP ÁN A

Câu đề bài: Câu nào sau đây Không đúng?

Đáp án A. Thực vật thường là sinh vật dị dưỡng.

Các đáp án còn lại:

B. Thực vật lấy năng lượng mặt trời để tạo ra đường.

In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose.

Trong quá trình này, năng lượng mặt trời được hấp thụ bởi chất diệp lục được lưu trữ dưới dạng năng lượng hóa học dưới dạng các loại đường đơn giản như glucose.

C. Quang hợp tạo ra khí oxy.

In addition, photosynthesis produces oxygen gas.

Ngoài ra, quang hợp tạo ra khí oxy.

D. Vật liệu hữu cơ chứa một lượng năng lượng.

Thông tin trong bài:

Many organisms cannot produce their own food and must obtain energy by eating organic matter.

Nhiều sinh vật không thể tự sản xuất thức ăn của mình và phải có năng lượng bằng cách ăn các chất hữu cơ.

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DM

Dương Minh

13 tháng 9 2017

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30. Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of...

Đọc tiếp

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30.

Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energy. As food, they fuel our bodies and those of most other creatures. In such forms as oil, gas, and coal, they heat our homes, run our factories and power our cars.

Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. The most common photosynthetic pigment is chlorophyll. The bright green color characteristic of plants is caused by it. Most algae have additional pigments that may mask the green chlorophyll. Because of these pigments, algae may be not only green but brown, red, blue or even black.

In a series of enzyme-controlled reactions, the solar energy captured by chlorophyll and other pigments is used to make simple sugars, with carbon dioxide and water as the raw materials. Carbon dioxide is one of very few carbon- containing molecules not considered to be organic compounds. Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose. The glucose is then used to make other organic compounds. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply.

Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They are called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs. Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs.

(Hooked on TOEFL Reading - LinguaForum)

Which of the following is true about heterotrophs?

A. They require more energy than autotrophs.

B. They are not reliant on simple sugars for energy.

C. They cannot exist without the presence of autotrophs.

D. They are mostly land-bound organisms.

#Mẫu giáo

1

NH

Nguyen Hoang Hai

13 tháng 9 2017

ĐÁP ÁN C

Câu đề bài: Điều nào sau đây nói đúng về heterotrophs: sinh vật dị dưỡng?

Đáp án C: Chúng không thể tồn tại mà không có sự hiện diện của autotrophs: sinh vật tự dưỡng.

Các đáp án còn lại:

A. Chúng đòi hỏi nhiều năng lượng hơn là sinh vật tự dưỡng.

B. Chúng không phụ thuộc vào các loại đường đơn cho năng lượng.

D. Chúng chủ yếu là các sinh vật gắn liền với đất liền.

Thông tin trong bài:

Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs. - Nhiều sinh vật không thể tự sản xuất thức ăn của mình và phải có năng lượng bằng cách ăn các chất hữu cơ. Chúng được gọi là sinh vật dị dưỡng.

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DM

Dương Minh

10 tháng 2 2018

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30. Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of...

Đọc tiếp

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30.

Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energy. As food, they fuel our bodies and those of most other creatures. In such forms as oil, gas, and coal, they heat our homes, run our factories and power our cars.

Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. The most common photosynthetic pigment is chlorophyll. The bright green color characteristic of plants is caused by it. Most algae have additional pigments that may mask the green chlorophyll. Because of these pigments, algae may be not only green but brown, red, blue or even black.

In a series of enzyme-controlled reactions, the solar energy captured by chlorophyll and other pigments is used to make simple sugars, with carbon dioxide and water as the raw materials. Carbon dioxide is one of very few carbon- containing molecules not considered to be organic compounds. Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose. The glucose is then used to make other organic compounds. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply.

Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They are called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs. Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs.

(Hooked on TOEFL Reading - LinguaForum)

Based on the information in paragraph 3, we can see that glucose________.

A. enables photosynthesis

B. is a byproduct of oxygen production

C. contains carbon

D. creates enzymes

#Mẫu giáo

1

NH

Nguyen Hoang Hai

10 tháng 2 2018

ĐÁP ÁN C

Câu đề bài: Dựa trên thông tin trong đoạn 3, chúng ta có thể thấy rằng đường huyết _________ .

Đáp án C: chứa carbon

Các đáp án còn lại:

A. cho phép quang hợp

B. là sản phẩm phụ của sản sinh oxy.

D. tạo ra các enzym

Thông tin trong bài:

Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose.

Quang hợp sau đó chuyển đổi carbon từ một vô cơ thành dạng hữu cơ. Đây được gọi là cố định carbon. Trong quá trình này, năng lượng mặt trời được hấp thụ bởi chất diệp lục được lưu trữ dưới dạng năng lượng hóa học dưới dạng các loại đường đơn giản như glucose.

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DM

Dương Minh

4 tháng 6 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30. Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30.

Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energy. As food, they fuel our bodies and those of most other creatures. In such forms as oil, gas, and coal, they heat our homes, run our factories and power our cars.

Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. The most common photosynthetic pigment is chlorophyll. The bright green color characteristic of plants is caused by it. Most algae have additional pigments that may mask the green chlorophyll. Because of these pigments, algae may be not only green but brown, red, blue or even black.

In a series of enzyme-controlled reactions, the solar energy captured by chlorophyll and other pigments is used to make simple sugars, with carbon dioxide and water as the raw materials. Carbon dioxide is one of very few carbon- containing molecules not considered to be organic compounds. Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose. The glucose is then used to make other organic compounds. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply.

Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They are called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs. Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs.

(Hooked on TOEFL Reading - LinguaForum)

The word “fuel” in the first paragraph is similar in meaning to_________.

A. give fuel to

B. produce organic materials

C. help to function

D. provide nutrients for

#Mẫu giáo

1

NH

Nguyen Hoang Hai

4 tháng 6 2019

ĐÁP ÁN D

Câu đề bài: Từ “nhiên liệu " trong đoạn đầu tiên tương tư nghĩa như _________ . Đáp án D: cung cấp dinh dưỡng cho

Các đáp án còn lại:

A. cung cẩp nhiên liệu cho

B. sản xuất vật liệu hữu cơ

C. giúp chức năng

Thông tin trong bài:

As food, they fuel our bodies and those of most other creatures.

- Là thức ăn, chúng cung cấp dinh dưỡng cho cơ thể chúng ta và những sinh vật

khác.

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DM

Dương Minh

10 tháng 12 2017

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30. Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of...

Đọc tiếp

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30.

Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energy. As food, they fuel our bodies and those of most other creatures. In such forms as oil, gas, and coal, they heat our homes, run our factories and power our cars.

Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. The most common photosynthetic pigment is chlorophyll. The bright green color characteristic of plants is caused by it. Most algae have additional pigments that may mask the green chlorophyll. Because of these pigments, algae may be not only green but brown, red, blue or even black.

In a series of enzyme-controlled reactions, the solar energy captured by chlorophyll and other pigments is used to make simple sugars, with carbon dioxide and water as the raw materials. Carbon dioxide is one of very few carbon- containing molecules not considered to be organic compounds. Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose. The glucose is then used to make other organic compounds. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply.

Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They are called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs. Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs.

(Hooked on TOEFL Reading - LinguaForum)

It can be inferred from the passage that the author considers solar energy to be_________.

A. useless to most bacteria and algae

B. a permanent and everlasting source of energy

C. a perfect solution to the energy problem

D. essential for every organism on earth

#Mẫu giáo

1

NH

Nguyen Hoang Hai

10 tháng 12 2017

ĐÁP ÁN D

Câu đề bài: Ta có thể suy ra từ đoạn văn rằng tác giả coi năng lượng mặt trời là _________ .

Đáp án D: cần thiết cho mọi sinh vật trên trái đất Các đáp án còn lại:

A. Vô dụng với hầu hết vi khuẩn và tảo

B. Nguồn năng lượng lâu dài và vĩnh cửu

C. Một giải pháp hoàn hảo cho vấn đề năng lượng

Thông tin trong bài:

Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply. - Quá trình quang hợp bắt đầu khi năng lượng mặt trời được hấp thụ bởi các hóa chất gọi là sắc tố quang hợp được chứa trong một sinh vật. Ngoài ra, quang hợp tạo ra khí oxy. Tất cả khí oxy trên trái đất, cả trong khí quyển chúng ta hít thở và trong đại dương, được sinh ra bởi các sinh vật quang hợp. Quang hợp liên tục bổ sung nguồn cung cấp oxy của trái đất

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DM

Dương Minh

1 tháng 7 2017

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30. Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of...

Đọc tiếp

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30.

Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energy. As food, they fuel our bodies and those of most other creatures. In such forms as oil, gas, and coal, they heat our homes, run our factories and power our cars.

Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. The most common photosynthetic pigment is chlorophyll. The bright green color characteristic of plants is caused by it. Most algae have additional pigments that may mask the green chlorophyll. Because of these pigments, algae may be not only green but brown, red, blue or even black.

In a series of enzyme-controlled reactions, the solar energy captured by chlorophyll and other pigments is used to make simple sugars, with carbon dioxide and water as the raw materials. Carbon dioxide is one of very few carbon- containing molecules not considered to be organic compounds. Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose. The glucose is then used to make other organic compounds. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply.

Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They are called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs. Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs.

(Hooked on TOEFL Reading - LinguaForum)

From the passage, we can see that___________.

A. Most plants have additional pigments

B. Algae are a kind of simple plants

C. Autotrophs obtain energy by eating organic matter

D. Oxygen helps the process of photosynthesis

#Mẫu giáo

1

NH

Nguyen Hoang Hai

1 tháng 7 2017

ĐÁP ÁN B.

Đáp án B: Tảo là một loại cây đơn giản.

Các đáp án còn lại:

A. Hầu hết thực vật có bổ sung sắc tố

C. Sinh vật tự dưỡng có được năng lượng bằng cách ăn chất hữu cơ.

D. Oxy giúp cho quá trình quang hợp.

Thông tin trong bài:

Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They arc called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs.

Các sinh vật có khả năng quang hợp có thể thu được tất cả năng lượng cần thiết từ ánh sáng mặt trời và không cần ăn. Chúng được gọi là tự dưỡng. Thực vật là những chất tự dưỡng quen thuộc nhất trên đất liền. Trong đại dương, tảo và vi khuẩn là những chất tự dưỡng quan trọng nhất.

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DM

Dương Minh

19 tháng 4 2018

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30. Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of...

Đọc tiếp

* Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 24 to 30.

Almost all living things ultimately get their energy from the sun. In a process called photosynthesis, plants, algae, and some other organisms capture the sun's energy and use it to make simple sugars such as glucose. Most other organisms use these organic molecules as a source of energy. Organic materials contain a tremendous amount of energy. As food, they fuel our bodies and those of most other creatures. In such forms as oil, gas, and coal, they heat our homes, run our factories and power our cars.

Photosynthesis begins when solar energy is absorbed by chemicals called photosynthetic pigments that are contained within an organism. The most common photosynthetic pigment is chlorophyll. The bright green color characteristic of plants is caused by it. Most algae have additional pigments that may mask the green chlorophyll. Because of these pigments, algae may be not only green but brown, red, blue or even black.

In a series of enzyme-controlled reactions, the solar energy captured by chlorophyll and other pigments is used to make simple sugars, with carbon dioxide and water as the raw materials. Carbon dioxide is one of very few carbon- containing molecules not considered to be organic compounds. Photosynthesis then converts carbon from an inorganic to an organic form. This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose. The glucose is then used to make other organic compounds. In addition, photosynthesis produces oxygen gas. All the oxygen gas on earth, both in the atmosphere we breathe and in the ocean, was produced by photosynthetic organisms. Photosynthesis constantly replenishes the earth's oxygen supply.

Organisms that are capable of photosynthesis can obtain all the energy they need from sunlight and do not need to eat. They are called autotrophs. Plants are the most familiar autotrophs on land. In the ocean, algae and bacteria are the most important autotrophs. Many organisms cannot produce their own food and must obtain energy by eating organic matter. These are called heterotrophs.

(Hooked on TOEFL Reading - LinguaForum)

The phrase “this process” in the third paragraph refers to the process of__________.

A. storing chemical energy

B. photosynthesis

C. absorbing solar energy

D. carbon fixation

#Mẫu giáo

1

NH

Nguyen Hoang Hai

19 tháng 4 2018

ĐÁP ÁN D

Câu đề bài: Cụm từ “quá trình này” trong đoạn ba đề cập đến quá trình của _________.

Đáp án D: sự cố định carbon

Các đáp án còn lại:

A. Lưu trữ năng lượng hóa học

B. Sự quang hợp

C. Hấp thụ năng lượng mặt trời

Thông tin trong bài:

This is called carbon fixation. In this process, the solar energy that was absorbed by chlorophyll is stored as chemical energy in the form of simple sugars like glucose.

Đây được gọi là cố định carbon. Trong quá trình này, năng lượng mặt trời được hấp thụ bởi chất diệp lục được lưu trữ dưới dạng năng lượng hóa học dưới dạng các loại đường đơn giản như glucose.

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Dương Minh

29 tháng 10 2019

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.Life in the UniverseExobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.What sorts of planets are most...

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Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 35 to 42.

Life in the Universe

Exobiology is the study of life that originates from outside of Earth. As yet, of course, no such life forms have been found. Exobiologists, however, have done important work in the theoretical study of where life is most likely to evolve, and what those extrateưestrial life forms might be like.

What sorts of planets are most likely to develop life? Most scientists agree that a habitable planet must be terrestrial, or rock-based, with liquid surface water and biogeochemical cycles that somewhat resemble Earth’s. Water is an important solvent involved in many biological processes. Biogeochemical cycles are the continuous movement and transformation of materials in the environment. These cycles include the circulation of elements and nutrients upon which life and the Earth’s climate depend. Since (as far as we know) all life is carbon-based, a stable carbon cycle is especially important.

The habitable zone is the region around a star in which planets can develop life. Assuming the need for liquid surface water, it follows that most stars around the size of our sun will be able to sustain habitable zones for billions of years. Stars that are larger than the sun are much hotter and bum out more quickly; life there may not have enough time to evolve. Stars that are smaller than the sun have different problem. First of all, planets in their habitable zones will be so close to the star that they will be “tidally locked” – that is one side of the planet will always face the star in perpetual daylight with the other side in the perpetual night. Another possible obstacle to life on smaller stars is that they tend to vary in their luminosity, or brightness, due to flares and “star spots”. The variation can be large enough to have harmful effects on the ecosystem.

Of course, not all stars of the right size will give rise to life; they also must have terrestrial planets with the right kind of orbits. Most solar systems have more than one planet, which influence each other’s orbits with their own gravity. Therefore, in order to have a stable system with no planets flying out into space, the orbits must be a good distance from one another. Interestingly, the amount of space needed is roughly the width of a star’s habitable zone. This means that for life to evolve, the largest possible number of life-supporting planets in any star’s habitable zone is two.

Finally, not all planets meeting the above conditions will necessarily develop life. One major threat is large, frequent asteroid and comet impacts, which will wipe out life each time it tries to evolve. The case of Earth teaches that having large gas giants, such as Saturn and Jupiter,.in the outer part of the solar system can help keep a planet safe for life. Due to their strong gravitation, they tend to catch or deflect large objects before they can reach Earth

What is the topic of the passage?

A. The search for intelligent life

B. Conditions necessary for life

C. Characteristics of extraterrestrial life

D. Life in our solar system

#Mẫu giáo

1

NH

Nguyen Hoang Hai

29 tháng 10 2019

Đáp án B

Kiến thức: Đọc hiểu

Giải thích:

Chủ đề của đoạn văn là gì?

A. Cuộc tìm kiếm cuộc sống thông minh B. Điều kiện cần thiết cho sự sống.

C. Đặc điểm của sự sống ngoài Trái đất D. Sự sống trong hệ mặt trời của chúng ta.

Thông tin: Exobiology is the study of life that originates from outside of Earth.

Tạm dịch: Sinh học ngoài Trái đất là một nghiên cứu về cuộc sống từ bên ngoài bề mặt Trái Đất

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DM

Dương Minh

7 tháng 8 2018

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions. For many people who live in cities, parks are an important part of the landscape. They provide a place for people to relax and play sports, as well as a refuge from the often harsh environment of a city. What people often overlook is that parks also provide considerable environmental benefits.One benefit of parks is that plants absorb...

Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

For many people who live in cities, parks are an important part of the landscape. They provide a place for people to relax and play sports, as well as a refuge from the often harsh environment of a city. What people often overlook is that parks also provide considerable environmental benefits.

One benefit of parks is that plants absorb carbon dioxide—a key pollutant—and emit oxygen, which humans need to breathe. According to one study, an acre of trees can absorb the same amount of carbon dioxide that a typical car emits in 11,000 miles of driving. Parks also make cities cooler. Scientists have long noted what is called the Urban Heat Island Effect: building materials such as metal, concrete, and asphalt absorb much more of the sun’s heat and release it much more quickly than organic surfaces like trees and grass. Because city landscapes contain so much of these building materials, cities are usually warmer than surrounding rural areas. Parks and other green spaces help to mitigate the Urban Heat Island Effect.

Unfortunately, many cities cannot easily create more parks because most land is already being used for buildings, roads, parking lots, and other essential parts of the urban environment. However, cities could benefit from many of the positive effects of parks by encouraging citizens to create another type of green space: rooftop gardens. While most people would not think of starting a garden on their roof, human beings have been planting gardens on rooftops for thousands of years. Some rooftop gardens are very complex and require complicated engineering, but others are simple container gardens that anyone can create with the investment of a few hundred dollars and a few hours of work.

Rooftop gardens provide many of the same benefits as other urban park and garden spaces, but without taking up the much-needed land. Like parks, rooftop gardens help to replace carbon dioxide in the air with nourishing oxygen. They also help to lessen the Urban Heat Island Effect, which can save people money. In the summer, rooftop gardens prevent buildings from absorbing heat from the sun, which can significantly reduce cooling bills. In the winter, gardens help hold in the heat that materials like brick and concrete radiate so quickly, leading to savings on heating bills. Rooftop vegetable and herb gardens can also provide fresh food for city dwellers, saving them money and making their diets healthier. Rooftop gardens are not only something everyone can enjoy, they are also a smart environmental investment.

The author claims all of the following to be the benefits of rooftop gardens except _______.

A. increased space for private relaxation

B. savings on heating and cooling costs

C. better food for city dwellers

D. improved air quality

#Mẫu giáo

1

NH

Nguyen Hoang Hai

7 tháng 8 2018

A

Các đáp án B, C, D đều được nhắc đến ở đoạn cuối:

- In the summer, rooftop gardens prevent buildings from absorbing heat from the sun, which can significantly reduce cooling bills. In the winter, gardens help hold in the heat that materials like brick and concrete radiate so quickly, leading to savings on heating bills.

- Rooftop vegetable and herb gardens can also provide fresh food for city dwellers

- Like parks, rooftop gardens help to replace carbon dioxide in the air with nourishing oxygen.

Chỉ có A là không được nhắc đến

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