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28 tháng 11 2021

Hơi thở nguyên tử

dịch nghĩa tiếng anh

24 tháng 5 2019

1.the periodic table contains all the elements,......has a particular atomic weight and atomic number

A. Which of each

B. Each of which

C. Which each

D. Each

II. Find the word which has different stress pattern from the others.1. A. music                        B. historic                    C. atomic              D. iconic2. A. medical                            B. national                    C. chemical             D. historical3. A. geography                B. apology                         C....
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II. Find the word which has different stress pattern from the others.

1. A. music                        B. historic                    C. atomic              D. iconic

2. A. medical                            B. national                    C. chemical             D. historical

3. A. geography                B. apology                         C. employee                D. artistic

4. A. Taiwanese               B. biology                           C. botanical                 D. photography

5. A. historical                 B. interviewee                     C. biography               D. psycholog

6. A. village                    B. prevent                    C earthquake            D. shelter

7. A. Chinese                           B. Japanese                   C. historic               D. biology

8. A. classic                    B. nature                       C. degree                 D. debris

VOCABURLARY AND GRAMMAR

I:  Choose the best answer. (A, B, C or D )

1. I like ______________ back my home village on holiday.

A. comes                         B. to come             C. came                           D. is coming

2. If the factory  _______dumping poison into the lake, all the fish and other aquatic animals will die.

A. continues                    B. to continue          C. continued                 D. will continue

3.The train________________ at 4 pm .

A. will leave                    B. leaves                   C. left                  D. will be leaving

4. If I were you, I  ______________ that car .

A. would buy                        B. buy                    C. bought                  D. buying

5. If we recycle more, we ________________ the Earth.

A. help                          B. would help              C. helping                   D. will help

6. This is one of the worst volcanic __________ in this year.

A. eruption                  B. erupt                       C. erupting                  D. eruptive

7. The roof of the building __________ in a storm a few days ago.

A. damaged                B. was damaged         C. has damaged          D. has been damaged

8. In some English speaking countries, turkey is __________food at Christmas.

A. national                  B. historical                 C. traditional               D. possible

9. Last night’s storm caused a lot of __________ to people in that area.

A. droughts                 B. forests                     C. damages                 D. volcanoes

10. Since 1965, the maple tree with red leaves _________ the most well-known Canadian symbol.

A. has become             B. become                   C. became                   D. becoming

11. The famous Sydney Opera House            as an arts center since 1973.

A. serves                B. served               C. have served                D. has served

12. If you           the president, what would you do to help the environment?

A. would be           B. are                    C. had been           D. were

13. Don’t drink that water. It’s           .

A. contaminated    B. pure                           C. damaged          D. dumped

14.  Linh: Mai has won the first prize.  - Ha:           !

A. That's awesome           B. Oh dear            C. How terrible     D. That's shocking

15. Have you come           solutions to this problem?

A. up to                 B. to with              C. up with             D. on to

16. The roof of the building           in a storm a few days ago.

A. damaged                    B. was damaged    C. has damaged    D. has been damaged

17. A severe tropical          is called a typhoon.

A. drought                      B. rain                  C. flood                D. storm              

18. As soon as the floodwater           down, people           their houses.

A. went – cleaned                               B. had gone – cleaned

C. went - had cleaned                                  D. had gone – had cleaned

19. By the time we got to the cinema, the film _____.

A. started                        B. had started                 C. starting        D. was starting

20. This time next week we ............. an exam.

A. will have                             B. have                       C. will be having   D. is having

II. Supply the correct tense of the words given in each blanket.

1.     Four countries ______________ (visit) by John so far.

2.     London ______________ (have) a population of eight million people.

3.     The Statue of Liberty in New York is a monument which ______________ (symbolize) freedom.

4.     Vietnam’s Independence Day ________________ (celebrate) on September 09th.

5.     We ______________ (visit) Sydney Opera House for several times.

6.     Some activities ______________ (prepare) to celebrate the lunar new year now.

 

C.READING

I. Read the passage  and choose the correct answer (A, B, C or D).

          Australia is a country in the Southern Hemisphere (1) .  .  .  .  . comprises the mainland of the Australian continent, the island of Tasmania, and many smaller islands  in the Indian and Pacific Oceans. Neighbouring countries (2) .  .  .  .  . Indonesia, East Timor, and Papua New Guinea (3) .  .  .  .  . the north, the Solomon, Vanuatu, and New Caledonia to the northeast, and New Zealand to the Southeast. Australia (4) .  .  .  .  . six states, and two major mainland territories. The (5) .  .  .  .  . city of Australia is Canberra. With a population of over 380,000, it’s Australia’s largest inland city and the eighth largest Australian city overall.

1.       A. who                 B. where               C. which               D. what

2.       A. include             B. contain             C. has                   D. conclude

3.       A. on                    B. to                     C. by                    D. at

4.       A. has                   B. takes                C. gets                  D. begins

5.       A. capital              B. urban               C. rural                 D. suburb

 

II)-Read the passage and then decide whether the statements are true (T) or false (F).

The Kiwi

          The kiwi lives only in New Zealand. It is a very strange bird because it cannot fly. The kiwi is the same size as a chicken. It has no wings or tail. It does not have any feathers like other birds.

          A kiwi likes a lot of trees around it. It sleeps during the day because the sunlight hurts its eyes. It can smell things with its nose. It is the only bird in the world that can smell things. The kiwi’s eggs are very big.

          There are only a few kiwis in New Zealand now. New Zealanders want their kiwis to live. There is a picture of a kiwi on New Zealand money. People from New Zealand are sometimes called kiwis.

 

T

F

     1.            Kiwis live in Australia and New Zealand.

¨

¨

     2.            A kiwi has a tail but no wings

¨

¨

     3.            It sleeps during the day because light hurts its eyes.

¨

¨

     4.            People in New Zealand do not want all the kiwis to die.

¨

¨

     5.            The kiwi is a strange New Zealand bird.

¨

¨

III. Read the passage and answer these questions below:

England is not a large country. No town in England is very far from the sea, and many English families spend their summer holidays at the seaside. There are no high mountains in England, no very long rivers and very large forests.

There are many towns in England. No town is very far from another. The English countryside between the towns is like a carpet of many colors. In spring and summer, the fields, meadows and forests are light green or dark green, and the gardens are green, red, blue, yellow and white with flowers.

Questions

1. Is England a large country?

..................................................................................................................................................

2. Where do many English families spend their summer holidays?

..................................................................................................................................................

3. Are there many towns in England?

..................................................................................................................................................

4. What is the English countryside like?

..................................................................................................................................................

WRITING:

I. Rewrite the following sentences so that their meaning stays the same, using the words given.

1. There was a loud noise next to my door last night, so I couldn’t sleep.

→ Because …………………………………………………………………

2. Tornadoes can move objects as big as a car.

→ Objects…………………………………………………………………..

3. Your parents are happy because you behave yourself well.

→  If ………………………………………………………………………..

4. They provided food then cleared up the debris.

→ After …………………………………………………………………….

5. I don’t know her number, so I don’t ring her up.

→ If …………………………………….....….…………………………….

6. The storm destroyed many houses in this village last week.

→ Many houses……………………………………………………………...

7. You should water these flowers regularly.

  ->These flowers should  ……………………………………………

8. If he doesn’t work hard, he will not pass his exam.

-> Unless ………………………………………………………………………………..

II. Rearrange the words to make meaningful sentences.

1. New York/ the/ but/ is/ city/ the USA/ the/ in/ not/ biggest/capital./

2. English/ an/language/ Malaysia/ India/ many/ is/ official/ in/ and/ other countries./

3. English speakers/ increasing/ the/ of/ number/ world/ is/ the/ in/ fast./

4. whereas/ capital/ of/ the/ London/ of/ Edinburgh/ capital/ England/ the/ is/ is/ Scotland./

 

 

 

 

 

 

 

 

 

 

 

0
Choose  the word  whose main stress is placed differently from the others.1. A. background             B. career                   C. secondary             D. private2. A. scientific                  B. atomic                  C. impossible              D. professor3. A. obtain                      B. determine             C. award                     D....
Đọc tiếp

Choose  the word  whose main stress is placed differently from the others.

1. A. background             B. career                   C. secondary             D. private

2. A. scientific                  B. atomic                  C. impossible              D. professor

3. A. obtain                      B. determine             C. award                     D. harbour

4. A. ambitious                 B. intelligent             C. brilliant                    D. mature

5. A. education                 B. difficulty               C. champion                D. institute

6. A. impossible                B. conditional           C. professional            D. scientific

7. A. educate                    B. physics                 C. brilliant                    D. position

8.A. husband                    B. children                C. award                      D. local

1
8 tháng 10 2021

1. A. background             B. career                   C. secondary             D. private

2. A. scientific                  B. atomic                  C. impossible              D. professor

3. A. obtain                      B. determine             C. award                     D. harbour

4. A. ambitious                 B. intelligent             C. brilliant                    D. mature

5. A. education                 B. difficulty               C. champion                D. institute

6. A. impossible                B. conditional           C. professional            D. scientific

7. A. educate                    B. physics                 C. brilliant                    D. position

8.A. husband                    B. children                C. award                      D. local

30 tháng 10 2021

Please help me!

30 tháng 10 2021

B. Chemical Symbol

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 following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in...
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 following questions.

Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.

Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.

According to paragraph 2, an atom's atomic number is determined by __________. 

A. the sum of its protons and electrons 

B. the difference in the mass of its neutrons and protons 

C. the strength of the bond between its protons and neutrons 

D. the total number of protons it has 

1
9 tháng 8 2018

Chọn D

Kiến thức: Đọc hiểu

Giải thích:

Theo đoạn 2, số lượng nguyên tử của một nguyên tố được xác định bởi __________.

  A. tổng số proton và electron của nó

  B. sự khác biệt về khối lượng giữa nơtron và proton của nó

  C. sức mạnh của liên kết giữa các proton và nơtron của nó

  D. tổng số proton nó có

Thông tin: Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons.

Tạm dịch: Các nguyên tố được xác định bởi hai con số: số lượng nguyên tử, bằng số lượng proton mà chúng có và trọng lượng nguyên tử, bằng tổng số nơtron và proton.

9 tháng 11 2018

Đối với phân đoạn 14/20. Tìm số tự nhiên được gọi là mẫu số trong mẫu số và giữ số nguyên tử, được cho một phần mới của 1/4.

3 tháng 9 2021

1. It was difficult for him to__ (breath/breathe) 2. jenny paused for__(breath/breathe) 3. I gave the child a__ on my back(ride/lift) 4. the battle of hastings was of great__ importance(historic/historical)

20 tháng 3 2017

Đáp án C

Studied => studying

14 tháng 1 2016

E​=6,625.10​-34.3.108​/(100.10​-12​)=1,99.10-15