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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 55 to 64.

Overpopulation, the situation of having large numbers of people with too few resources and too little space, is closely associated with poverty. It can result from high population density, or from low amounts of resources, or from both. Excessively high population densities put stress on available resources. Only a certainnumber of people can be supported on a given area of land, and that number depends on how much food and other resources the land can provide. In countries where people live primarily by means of simple farming, gardening, herding, hunting, and gathering, even large areas of land can support only small numbers of people because these labor-intensive subsistence activities produce only small amounts of food.
In developed countries such as the United States, Japan, and the countries of Western Europe, overpopulation generally is not considered a major cause of poverty. These countries produce large quantities of food through mechanized farming, which depends on commercial fertilizers, large-scale irrigation, and agricultural machinery. This form of production provides enough food to support the high densities of people in metropolitan areas.
A country’s level of poverty can depend greatly on its mix of population density and agricultural productivity. Bangladesh, for example, has one of the world’s highest population densities, with 1,147 persons per sq km. A large majority of the people of Bangladesh engage in low-productivity manual farming, which contributes to the country’s extremely high level of poverty. Some of the smaller countries in Western Europe, such as the Netherlands and Belgium, have high population densities as well. These countries practice mechanized farming and are involved in high-tech industries, however, and therefore have high standards of living.
At the other end of the spectrum, many countries in sub-Saharan Africa have population densities of less than 30 persons per sq km. Many people in these countries practice manual subsistence farming; these countries also have infertile land, and lack the economic resources and technology to boost productivity. As a consequence, these nations are very poor. The United States has both relatively low population density and high agricultural productivity; it is one of the world’s wealthiest nations.
High birth rates contribute to overpopulation in many developing countries. Children are assets to many poor families because they provide labor, usually for farming. Cultural norms in traditionally rural societies commonly sanction the value of large families. Also, the governments of developing countries often provide
little or no support, financial or political, for family planning; even people who wish to keep their families small have difficulty doing so. For all these reasons, developing countries tend to have high rates of population growth.

From "Poverty" by Thomas J. Corbett

Which of the following is given a definition in paragraph 1?

  • A. Poverty
  • B. Population density
  • C. Overpopulation
  • D. Simple farming
  • Câu 2:

    What will suffer when there are excessively high population densities?

    • A. Available resources
    • B. Farming methods
    • C. Land area
    • D. Skilled labor
  • Câu 3:

    The phrase “that number” in paragraph 1 refers to the number of ______.

    • A. resources
    • B. countries
    • C. people
    • D. densities
  • Câu 4:

    In certain countries, large areas of land can only yield small amounts of food because ______.

    • A. there is an abundance of resources
    • B. there is no shortage of skilled labor
    • C. there are small numbers of laborers
    • D. there is lack of mechanization
  • Câu 5:

    Bangladesh is a country where the level of poverty depends greatly on ______.

    • A. population density in metropolitan areas
    • B. both population density and agricultural productivity
    • C. its population density only
    • D. its high agricultural productivity
  • Câu 6:

    The phrase “engage in” in paragraph 3 is closest in meaning to ______.

    • A. escape from
    • B. look into
    • C. give up
    • D. participate in
  • Câu 7:

    The word “ infertile ” in paragraph 4 probably means ______.

    • A. impossible
    • B. unproductive
    • C. disused
    • D. inaccessible
  • Câu 8:

    Which of the following is TRUE, according to the passage?

    • A. In sub-Saharan African countries, productivity is boosted by technology.
    • B. There is no connection between a country’s culture and overpopulation.
    • C. All small countries in Western Europe have high population densities.
    • D. In certain developed countries, mechanized farming is applied.
  • Câu 9:

    Which of the following is a contributor to overpopulation in many developing countries?

    • A. High-tech facilities
    • B. High birth rates
    • C. Economic resources
    • D. Sufficient financial support
  • Câu 10:

    Which of the following could be the best title for the passage?

    • A. High Birth Rate and its Consequences
    • B. Poverty in Developing Countries
    • C. Overpopulation: A Worldwide Problem
    • D. Overpopulation: A Cause of Poverty
2
2 tháng 10 2019

Đáp án nè bạn:

1-C

2-A

3-C

4-D

5-B

6-D

7-B

8-D

9-B

10- D

2 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 55 to 64.

Overpopulation, the situation of having large numbers of people with too few resources and too little space, is closely associated with poverty. It can result from high population density, or from low amounts of resources, or from both. Excessively high population densities put stress on available resources. Only a certainnumber of people can be supported on a given area of land, and that number depends on how much food and other resources the land can provide. In countries where people live primarily by means of simple farming, gardening, herding, hunting, and gathering, even large areas of land can support only small numbers of people because these labor-intensive subsistence activities produce only small amounts of food.
In developed countries such as the United States, Japan, and the countries of Western Europe, overpopulation generally is not considered a major cause of poverty. These countries produce large quantities of food through mechanized farming, which depends on commercial fertilizers, large-scale irrigation, and agricultural machinery. This form of production provides enough food to support the high densities of people in metropolitan areas.
A country’s level of poverty can depend greatly on its mix of population density and agricultural productivity. Bangladesh, for example, has one of the world’s highest population densities, with 1,147 persons per sq km. A large majority of the people of Bangladesh engage in low-productivity manual farming, which contributes to the country’s extremely high level of poverty. Some of the smaller countries in Western Europe, such as the Netherlands and Belgium, have high population densities as well. These countries practice mechanized farming and are involved in high-tech industries, however, and therefore have high standards of living.
At the other end of the spectrum, many countries in sub-Saharan Africa have population densities of less than 30 persons per sq km. Many people in these countries practice manual subsistence farming; these countries also have infertileland, and lack the economic resources and technology to boost productivity. As a consequence, these nations are very poor. The United States has both relatively low population density and high agricultural productivity; it is one of the world’s wealthiest nations.
High birth rates contribute to overpopulation in many developing countries. Children are assets to many poor families because they provide labor, usually for farming. Cultural norms in traditionally rural societies commonly sanction the value of large families. Also, the governments of developing countries often provide
little or no support, financial or political, for family planning; even people who wish to keep their families small have difficulty doing so. For all these reasons, developing countries tend to have high rates of population growth.

From "Poverty" by Thomas J. Corbett

Which of the following is given a definition in paragraph 1?

  • A. Poverty
  • B. Population density
  • C. Overpopulation
  • D. Simple farming

  • Câu 2:

    What will suffer when there are excessively high population densities?

    • A. Available resources
    • B. Farming methods
    • C. Land area
    • D. Skilled labor
  • Câu 3:

    The phrase “that number” in paragraph 1 refers to the number of ______.

    • A. resources
    • B. countries
    • C. people
    • D. densities
  • Câu 4:

    In certain countries, large areas of land can only yield small amounts of food because ______.

    • A. there is an abundance of resources
    • B. there is no shortage of skilled labor
    • C. there are small numbers of laborers
    • D. there is lack of mechanization
  • Câu 5:

    Bangladesh is a country where the level of poverty depends greatly on ______.

    • A. population density in metropolitan areas
    • B. both population density and agricultural productivity
    • C. its population density only
    • D. its high agricultural productivity
  • Câu 6:

    The phrase “engage in” in paragraph 3 is closest in meaning to ______.

    • A. escape from
    • B. look into
    • C. give up
    • D. participate in
  • Câu 7:

    The word “ infertile ” in paragraph 4 probably means ______.

    • A. impossible
    • B. unproductive
    • C. disused
    • D. inaccessible
  • Câu 8:

    Which of the following is TRUE, according to the passage?

    • A. In sub-Saharan African countries, productivity is boosted by technology.
    • B. There is no connection between a country’s culture and overpopulation.
    • C. All small countries in Western Europe have high population densities.
    • D. In certain developed countries, mechanized farming is applied.
  • Câu 9:

    Which of the following is a contributor to overpopulation in many developing countries?

    • A. High-tech facilities
    • B. High birth rates
    • C. Economic resources
    • D. Sufficient financial support
  • Câu 10:

    Which of the following could be the best title for the passage?

    • A. High Birth Rate and its Consequences
    • B. Poverty in Developing Countries
    • C. Overpopulation: A Worldwide Problem
    • D. Overpopulation: A Cause of Poverty
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 1 to 10. Reading to oneself is a modern activity which was almost unknown to the scholars of the classical and medieval worlds, while during the fifteenth century the term "reading" undoubtedly meant reading aloud. Only during the nineteenth century did silent reading become commonplace. One should be wary, however, of assuming that silent reading came...
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 1 to 10.

Reading to oneself is a modern activity which was almost unknown to the scholars of the classical and medieval worlds, while during the fifteenth century the term "reading" undoubtedly meant reading aloud. Only during the nineteenth century did silent reading become commonplace.

One should be wary, however, of assuming that silent reading came about simply because reading aloud was a distraction to others. Examinations of factors related to the historical development of silent reading have revealed that it became the usual mode of reading for most adults mainly because the tasks themselves changed in character.

The last century saw a steady gradual increase in literacy and thus in the number of readers. As the number of readers increased, the number of potential listeners declined and thus there was some reduction in the need to read aloud. As reading for the benefit of listeners grew less common, so came the flourishing of reading as a private activity in such public places as libraries, railway carriages and offices, where reading aloud would cause distraction to other readers.

Towards the end of the century, there was still considerable argument over whether books should be used for information or treated respectfully and over whether the reading of materials such as newspapers was in some way mentally weakening. Indeed, this argument remains with us still in education. However, whatever its virtues, the old shared literacy culture had gone and was replaced by the printed mass media on the one hand and by books and periodicals for a specialised readership on the other.

By the end of the twentieth century, students were being recommended to adopt attitudes to books and to use reading skills which were inappropriate, if not impossible, for the oral reader. The social, cultural and technological changes in the century had greatly altered what the term "reading" implied.

Question 1: Reading aloud was more common in the medieval world because:

A. people relied on reading for entertainment

B. silent reading had not been discovered

C. there were few places available for private reading

D. few people could read to themselves

Question 2: The word "commonplace" in the first paragraph mostly means:

A. for everybody's use B. most preferable

C. attracting attention D. widely used

Question 3: The development of silent reading during the last century indicated

A. an increase in the average age of readers

B. an increase in the number of books

C. a change in the nature of reading

D. a change in the status of literate people

Question 4: Silent reading, especially in public places, flourished mainly because of:

A. the decreasing need to read aloud

B. the development of libraries

C. the increase in literacy

D. the decreasing number of listeners

Question 5 It can be inferred that the emergence of the mass media and specialized reading materials was an indication of .

A. a decline of standards of literacy

B. a change in the readers' interest

C. an alteration in educationalists ’attitudes

D. an improvement of printing techniques.

Question 6: The phrase "a specialized readership" in paragraph 4 mostly means:

A. a requirement for readers in a particular area of knowledge

B. a limited number of readers in a particular area of knowledge

C. a reading volume for particular professionals

D. a status for readers specialized in mass media

Question 7: The phrase “oral reader" in the last paragraph mostly means a person who:

A. is good at public speaking

B. practices reading to an audience

C. takes part in an audition

D. is interested in spoken language

Question 8: All of the following might be the factors that affected the continuation of the old shared literacy culture EXCEPT .

A. the inappropriate reading skills B. the specialized readership

C. the diversity of reading materials D. the printed mass media

Question 9: Which of the following statements is NOT TRUE according to the passage?

A. Reading aloud was more common in the past than it is today.

B. Not all printed mass media was appropriate for reading aloud.

C. The decline of reading aloud was wholly due to its distracting effect.

D. The change in reading habits was partly due to the social, cultural and technological changes.

Question 10: The writer of this passage is attempting to .

A. explain how reading habits have developed

B. change people's attitudes to reading

C. show how reading methods have improved

D. encourage the growth of reading.

3

Bạn đăng trên box Anh nhé,Bạn đang đăng trên box Toán đấy

2 tháng 10 2019

Tham khảo

Câu 1. Đáp án D few people could read to themselves

Thông tin ở đầu đoạn 1:”Reading to………….reading aloud”. (Đọc thầm 1 mình là 1 hoạt động hiện đại mà hầu như không hề được biết đến đối với các học giả thời cổ điển và thời trung cổ,trong khi vào thế kỷ 15,nói đến đọc nghĩa là đọc lớn tiếng.)

Câu 2. Đáp án D widely used

Định nghĩa của commonplace: được sử dung rộng rãi,phổ biến thông dụng

Câu 3. Đáp án C a change in the nature of reading

Thông tin ở 2 đoạn 2:”examination of factors………….in character”. (Sự khỏa sát các yếu tố liên quan đến sự phát triển có tính lịch sử của việc đọc thầm đã trở thành lối đọc thông dụng đối với đa số người lớn vì bản thân việc đọc đã thay đổi bản chất.)

Câu 4. Đáp án C the increase in literacy

Thông tin ở đầu đoạn 3:”The lát century saw…………………to read aloud”: (Thế kỷ vừa qua chứng kiến 1 sự gia tăng, số người đọc tiềm năng giảm bớt và do vậy nhu cầu đọc lớn tiếng cũng giảm đi.)

Câu 5. Đáp án A a decline of standards of literacy

Thông tin ở cuối đoạn 4:”However,………..on the other”: Tuy nhiên dù lợi ích của việc đọc là gì đi nữa,thì cái nền văn hóa chia sẻ tri thức của ngày xưa cũng đã biến mất và bị thay thế bởi 1 nền báo chí và 1 bên là sách vở và các ấn phẩm định kỳ dành cho các độc giả chuyên ngành

Câu 6. Đáp án B a limited number of readers in a particular area of knowledge

Số đọc giả có giới hạn chuyên về 1 ngành kiến thức riêng biệt

Câu 7. Đáp án B practises reading to an audience (Đọc cho 1 số thính giả nghe)
Câu 8. Đáp án A the inappropriate reading skills (Kỹ năng đọc không phù hợp)
Câu 9. Đáp án C

The decline of reading aloud was wholly due to its distracting effect. Sự suy giảm việc đọc lớn tiếng la do tác dụng làm phiền người khác của nó

Câu 10. Đáp án A explain how reading habits have developed

Tác giả đã cố giải thích thói quen đọc đã thay đổi như thế nào

EX: Read the passage, and choose the correct answer A, B, C or D for each question.     For many of us, food isn't that important. However, for a few people, food is very improtant. For these people, meals are a kind of art.     These people are interested in something called "haute cuisine" . Haute cuisine is French for "high cooking" . You can usually find haute cuisine in fancy French hotels anh high level restaurants.     Haute cuisine has changed over the years, but the most important...
Đọc tiếp

EX: Read the passage, and choose the correct answer A, B, C or D for each question.

     For many of us, food isn't that important. However, for a few people, food is very improtant. For these people, meals are a kind of art.

     These people are interested in something called "haute cuisine" . Haute cuisine is French for "high cooking" . You can usually find haute cuisine in fancy French hotels anh high level restaurants.

     Haute cuisine has changed over the years, but the most important parst have remained the same. Haute cuisine meals are almost always very complicated, and they take a very long time to make. Usually, an haute cuisine meal has very many small dishes, instead of a few large ones. Also, with haute cuisine dishes, the appearance is very important. Of course, an haute cuisine dish must taste wonderful, but that is not enough. An haute cuisine dish must also look beautiful. Another very important part of haute cuisine is wine. Chefs and customers always try to select a wine that is a perfect match for their meal. The wine that people drink with haute cuisine is often very rare. You will not be surprised to hear that haute cuisine dishes are almost always very expensive.

     Haute cuisine is traditionally French, but other countries have similar concepts of food. People often compare Japanese kaiseki to haute cuisine. Kaiseki is another very complicated, very high level kind of food. In Japan, kaiseki is also considered a kind of art. When Japanese chefs prepare kaiseki, they don't just consider the taste of the food. They also consider the food's texture, colour, and appearance. Chefs even match the colour of the food to the colour of the plate and the chopsticks. Of course, although haute cuisine and kaiseki share many similarities, the food itself is quite different.

     If you ever get the chance to try kaiseki or haute cuisine , remember one thing: You are not just having a meal, you are enjoying a very special kind of art.

1. What can we say about the wines that people drink with haute cuisine?

A. Theyall come from France.

B. They are all quite common.

C. They are always red wine.

D. They are usually rare.

2. What is true about the dishes in haute cuisine?

A. Haute cuisine usually has many small dishes.

B. Haute cuisine usually has just a few large dishes.

C. Haute cuisine usually has many large dishes.

D. Haute cuisine usually has just a few small dishes.

3. What does the fifth sentence of the third paragraph mean?

A. Haute cuisine has to taste good, but is has to be good in other ways, too

B. Haute cuisine only has to taste good.

C. Haute cuisine has to look good, but it doesn't have to taste good.

D. Every haute cuisine dish tastes the same.

4. What does the passage NOT say about haute cuisine?

A. It is very expensive.

B. It takes a short time to make.

C. It is very complicated.

D. It is usually served in fancy hotels and high level restaurants.

5. What does the passage say about kaiseki and haute cuisine?

A. The food is the same in both.

B. People never care about them.

C. People often compare them.

D. Haute cuisine is older than kaiseki.

 

1
15 tháng 3 2021

1D

2 A

3A

4 B

5 C

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 32 to 41. Plants and animals will find it difficult to escape from or adjust to the effects of global warming. Scientists have already observed shifts in the lifecycles of many plants and animals, such as flowers blooming earlier and birds hatching earlier in the spring. Many species have begun shifting where they live or their annual migration...
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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 32 to 41.

Plants and animals will find it difficult to escape from or adjust to the effects of global warming. Scientists have already observed shifts in the lifecycles of many plants and animals, such as flowers blooming earlier and birds hatching earlier in the spring. Many species have begun shifting where they live or their annual migration patterns due to warmer temperatures.
With further warming, animals will tend to migrate to ward the poles and up mountainsides toward higher elevations. Plants will also attempt to shift their ranges, seeking new areas as old habitats grow too warm. In many places, however, human development will prevent these shifts. Species that find cities or farmland blocking their way north or south may become extinct. Species living in unique ecosystems, such as those found in polar and mountaintop regions, are especially at risk because migration to new habitats is not possible. For example, polar bears and marine mammals in the Arctic are already threatened by dwindling sea ice but have nowhere farther north to go.
Projecting species extinction due to global warming is extremely difficult. Some scientists have estimated that 20 to 50 percent of species could be committed to extinction with 2 to 3 Celsius degrees of further warming. The rate of warming, not just the magnitude, is extremely important for plants and animals. Some species and even entire ecosystems, such as certain types of forest, may not be able to adjust quickly enough and may disappear.
Ocean ecosystems, especially fragile ones like coral reefs, will also be affected by global warming. Warmer ocean temperatures can cause coral to “bleach”, a state which if prolonged will lead to the death of the coral. Scientists estimate that even 1 Celsius degree of additional warming could lead to widespread bleaching and death of coral reefs around the world. Also, increasing carbon dioxide in the atmosphere enters the ocean and increases the acidity of ocean waters. This acidification further stresses ocean ecosystems.

From "Global Warming" by Michael Mastrandrea an d Stephen H. Schneider

Scientists have observed that warmer temperatures in the spring cause flowers to ______.

  • A. bloom earlier
  • B. die instantly
  • C. become lighter
  • D. lose color
  • Câu 2:

    According to paragraph 2, when their habitats grow warmer, animals tend to move ______.

    • A. toward the North Pole and down mountainsides toward lower elevations
    • B. toward the poles and up mountainsides toward higher elevations
    • C. south-eastwards and down mountainsides toward lower elevations
    • D. north-westwards and up mountainsides toward higher elevations
  • Câu 3:

    The pronoun “those” in paragraph 2 refers to ______.

    • A. areas
    • B. habitats
    • C. species
    • D. ecosystems
  • Câu 4:

    The phrase “dwindling sea ice” in paragraph 2 refers to ______.

    • A. the cold ice in the Arctic
    • B. the violent Arctic Ocean
    • C. the melting ice in the Arctic
    • D. the frozen water in the Arctic
  • Câu 5:

    It is mentioned in the passage that if the global temperature rose by 2 or 3 Celsius degrees, ______.

    • A. half of the earth’s surface would be flooded
    • B. water supply would decrease by 50 percent
    • C. the sea level would rise by 20 centimeters
    • D. 20 to 50 percent of species could become extinct
  • Câu 6:

    According to the passage, if some species are not able to adjust quickly to warmer temperatures, ______.

    • A. they will certainly need water
    • B. they can begin to develop
    • C. they may be endangered
    • D. they move to tropical forests
  • Câu 7:

    The word “fragile” in paragraph 4 most probably means ______.

    • A. pretty hard
    • B. easily damaged
    • C. rather strong
    • D. very large
  • Câu 8:

    The bleaching of coral reefs as mentioned in paragraph 4 indicates ______.

    • A. the slow death of coral reefs
    • B. the blooming phase of sea weeds
    • C. the quick growth of marine mammals
    • D. the water absorption of coral reefs
  • Câu 9:

    The level of acidity in the ocean is increased by ______.

    • A. the loss of acidity in the atmosphere around the earth
    • B. the decrease of acidity of the pole waters
    • C. the extinction of species in coastal areas
    • D. the rising amount of carbon dioxide entering the ocean
  • Câu 10:

    What does the passage mainly discuss?

    • A. Global warming and possible solutions
    • B. Global warming and species migration
    • C. Influence of climate changes on human lifestyles
    • D. Effects of global warming on animals and plants
2
2 tháng 10 2019

Ummm bạn đăng sang bên tiếng anh nhé :>

2 tháng 10 2019

Tham khảo ở câu hỏi này nè:

Câu hỏi của Tên Của Tôi - Toán lớp 9 | Học trực tuyến

Choose the correct word marked A,B, or C to fill each blank in the following passage.(Why)There are many reasons (1) ____ it is important to have a hobby. First of all, a hobby can be a remedy for your (2) ____. Because it is the activity you choose for yourself, it will always give you pleasure and (3) ____ you relax. Even if you just spend a little time enjoying your hobby, you can see the difference (4) ____ your spirit. Second, some hobbies can also (5) ____ you financially. Many old people...
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Choose the correct word marked A,B, or C to fill each blank in the following passage.(Why)

There are many reasons (1) ____ it is important to have a hobby. First of all, a hobby can be a remedy for your (2) ____. Because it is the activity you choose for yourself, it will always give you pleasure and (3) ____ you relax. Even if you just spend a little time enjoying your hobby, you can see the difference (4) ____ your spirit. Second, some hobbies can also (5) ____ you financially. Many old people enjoy gardening. They grow a lot of trees and vegertable, so they can sell them for some money. In (6) ____, a hobby can help you connect with other people. If you like colecting stamps, you can (7) ____ a stamp club to share your albums with other collectors. If your hobby is caving eggshells, you can give your products to your friends (8) ____ gifts.

1. A.for B. why C.because

2. A.happiness B.pain C.tiredness

3. A.help B. have C. do

4. A. for B. in C. on

5. A.harm B.give C.benefit

6. A. addition B. general C.conclusion

7. A.take part B.go C. join

8. A. like B.as C.for

2
17 tháng 9 2018

1.a

2.c

3.a

4.b

5.c

6.a

7.c

8.b

17 tháng 9 2018

Cho mình sorry. 

1.b mới đúng!!!

Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work...
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Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)

1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.

2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work 2 days in advance. How long is the road, in meter?

3. Mrs. Darlie has a silver ring, a golden ring and a diamond ring. She put them on her left hand. Each ring can be on any of the five fingers. When there are two or three rings on the same finger, if the order in which they are put is different, that couunt as a different way. How many different ways for Lea to put these rings?

4. Let P(x) be a polynomial with degree 3 such that P(1)=3, P(2)=3, P(3)=7, P(4)=21. Find the value of P(5).

1

4. Call that polynomial P (x) = ax3 + bx2 + cx + d

We have P(1)=a+b+c+d=3   (1)

P(2)=8a+4b+2c+d=3   (2)

P(3)=27a+9b+3c+d  =7       (3) 

P(4)=64a+16b+4c+d     =21    (4)

From (1) and  (2) =>  7a+3b+c=0

From (1) and  (4)  => 63a+15b+3c=18

=> 12b+6c=-18  => 2b+c=-3

From (1) and  (3) =>26a+8b+2c=4=> 13a+4b+c=2

=> 13a+2b=5

It is possible

Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work...
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Giúp mình làm các câu hỏi này nha: (càng nhiều càng tốt!)

1. Tiffany and Ryan deposit some amount in a joint bank account such that total balance remains 500. If  amount deposited by Tiffany and Ryan are plotted as a linear graph on xy plane, find the area between this graph and the coordinate axis.

2.A group of workers is paving a road. If they pave 200m of the road a day, they will need 3 more days. to finish the work. If they pave 240m of the road a day, they will finish the work 2 days in advance. How long is the road, in meter?

3. Mrs. Darlie has a silver ring, a golden ring and a diamond ring. She put them on her left hand. Each ring can be on any of the five fingers. When there are two or three rings on the same finger, if the order in which they are put is different, that couunt as a different way. How many different ways for Lea to put these rings?

4. Let P(x) be a polynomial with degree 3 such that P(1)=3, P(2)=3, P(3)=7, P(4)=21. Find the value of P(5).

2
1. Tiffany và Ryan gửi một số tiền vào tài khoản ngân hàng chung sao cho tổng số dư còn lại 500. Nếu số tiền được gửi bởi Tiffany và Ryan được vẽ dưới dạng biểu đồ tuyến tính trên mặt phẳng xy, hãy tìm khu vực giữa biểu đồ này và trục tọa độ. 2.Một nhóm công nhân đang mở đường. Nếu họ mở 200m đường mỗi ngày, họ sẽ cần thêm 3 ngày nữa. để hoàn thành công việc. Nếu họ mở 240m đường mỗi ngày, họ sẽ hoàn thành công việc trước 2 ngày. Bao lâu là đường, tính bằng mét? 3. Bà Darlie có một chiếc nhẫn bạc, một chiếc nhẫn vàng và một chiếc nhẫn kim cương. Cô đặt chúng lên tay trái. Mỗi chiếc nhẫn có thể nằm trên bất kỳ ngón tay nào trong năm ngón tay. Khi có hai hoặc ba chiếc nhẫn trên cùng một ngón tay, nếu thứ tự chúng được đặt khác nhau, thì đó là một cách khác nhau. Có bao nhiêu cách khác nhau để Lea đặt những chiếc nhẫn này? 4. Đặt P (x) là một đa thức có bậc 3 sao cho P (1) = 3, P (2) = 3, P (3) = 7, P (4) = 21. Tìm giá trị của P (5).
21 tháng 6 2019

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30 tháng 8 2020

e chỉ biết mỗi đề bài thôi chứ bài này khó lắm

Đề bài:

Ann và Bob có một số lượng lớn đồ ngọt mà họ đồng ý chia sẻ theo các quy tắc sau. Ann sẽ lấy một viên ngọt, sau đó Bob sẽ lấy hai viên kẹo và sau đó thay phiên nhau, mỗi người lấy một viên ngọt hơn những gì người kia vừa lấy. Khi số kẹo còn lại ít hơn số kẹo sẽ lấy ở lượt đó thì người cuối cùng lấy hết số kẹo còn lại. Trước sự ngạc nhiên của họ, khi họ ăn xong, họ đều có số kẹo như nhau

Họ quyết định thực hiện chia lại lần nữa, nhưng lần này, trước tiên, họ chia kẹo thành hai đống bằng nhau và sau đó lặp lại quy trình trên với mỗi đống. Ann đi đầu tiên cả hai lần. Họ vẫn kết thúc với cùng một số lượng kẹo mỗi loại.

Số lượng đồ ngọt tối đa ít hơn 1000 mà họ có thể bắt đầu bằng là bao nhiêu?

( Đọc kỹ đoạn văn sau và trả lời các câu hỏi phía dưới )Nam is my friend. He is studying English in London because he needs English for her job. He works for a bank in Hanoi. He learned English at school and university, too. He has forgotten a lot of it. He wants to improve his listening skill. His listening is terrible. This is his biggest problem. People talk very quickly and he can’t understand them. He likes studying English well. He hopes that he can talk to people...
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( Đọc kỹ đoạn văn sau và trả lời các câu hỏi phía dưới )

Nam is my friend. He is studying English in London because he needs English for her job. He works for a bank in Hanoi. He learned English at school and university, too. He has forgotten a lot of it. He wants to improve his listening skill. His listening is terrible. This is his biggest problem. People talk very quickly and he can’t understand them. He likes studying English well. He hopes that he can talk to people from all over the world and understand the words of his favorite songs.

 Questions: 1.What is Nam doing in London? …………………………………………………………………………………………

2. Where does he work? …………………………………………………………………………………………

3. Did he learn English at school and university? …………………………………………………………………………………………

4.What skills of learning English is he bad at? ………………………………………………………………………………………..

 

1
28 tháng 12 2016
  1.  He is studying English in London
  2. He works for a bank in Hanoi
  3. Yes, he did
  4.  He is bad at listening

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