1.Một con cá đang bơi dưới hồ nước, con cá đang ở vị trí cách mặt nước 2 m. Khối lượng
riêng của nước là 1000 kg/m 3 . Áp suất khí quyển là 76 cm Hg. Trọng lượng riêng của thủy ngân là
136000 N/m 3 . Con các đang phải chịu áp suất là:
A. 123360 Pa B. 103360 Pa C. 20000 Pa D. 2000 Pa
2: Một con cá chuối đang bơi dưới hồ nước sâu 6m, con cá đang ở vị trí cách đáy hồ 1 m.
Khối lượng riêng của nước là 1000 kg/m 3 . Diện tích xung quanh con cá là 4 dm 2 . Áp lực nước gây
tác dụng lên con cá là:
A. 2400 Pa B. 240 Pa C. 2000 N D. 200 N

I. Give the correct from of the word given to complete the sentence.

-Tidal energy is renewable ............ and clean (plenty) -Wind will be used as an ............... friendly sources of energy . (environment) -There are many ways will be used to solve the problem of .......... (pollute) -.............. , fossil fuels are harmful to the environment (fortunate) -We should use them .............. and try to find out alternative sources of power . (economy) -I think that solar energy can be an ............. source of energy in the near future (alter) -It's a clean source of energy . Sailboats couldn't move without this ............. (powerful) -Limit car trips by relying on biking , walking public ............. (transport) -Energy is used to ............ a lot electrical thing (product ) -I don't think so . The solar penels are becoming ............ and easy to install (cheap)

Giúp với!!!

Complete the sentecens, using the corect form of the words in brackets 

1. ............... habitats have been destroyed in recent years ( nanture )

2.A number of cleaning products contain ................ chemicals ( harm ) 

3. Water samples collectaed at these villages were seriously ..................... with bacteria ( contaminate ) 

4. People belive that the .................... water has brought cancer to the local residents 

5. Light pollution make us .................. to see the stars in the sky ( able) 

6. Noise is considenred as ................ pollution ( environment ) 

          Giúp nhanh giùm mình với .... Mình đang gấp 

Thank các bạn !!

chia động từ trong ngoặc ở thì htht:

1.the bill isn't right.They(make)....a mistake.

2.Don't you want to see this programme?it.....(start )

3.i(turn).....the heating on.It'll soon get warm in here.

4....they(pay).....money for your mother yet?

5.someone (take) ...... my bicycle.

6.wait for few minutes,please!i(finish) .......my dinner.

7......you ever(eat).....sushi?

8.she(not/come).......here for a long time

9.i(work)......here for there years

10......you ever......(be)a new york?

Giúp mik với đang cần gấp

II. COMPARATIVE ADJECTIVES AND ADVERBS

Complete the sentences, using the comparative form of the adjectives and adverbs.

1. It is (noisy) ……….. in the city than it is in the country.

2. The English test was ……….(easy) than I thought it would be.

3. English is thought to be (hard) ………than Math.

4. My house is (cheap) ………hers.

5. Her office is (far) ………away than mine.

6. Tom is (handsome) ………than David.

7. He did the test (bad) ………than I did.

8. A boat is (slow) ……..than a plane.

9. My new sofa is (comfortable) ………than the old one.

10. My sister dances (good) ………than me.

11. This road is (narrow) ………than that road.

12. He drives (careful) ……….than his brother.

13. Country children play (free) ………on streets than city children.

14. Life in a small town is (peaceful) ………than that in a big city.

15. The volunteers have to work much (hard) ………..usual to save the dying animals.