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Nylon was invented in the early 1930s by an American chemist, Julian Hill. Other scientists worked with his invention and finally on 27 October 1938, nylon was introduced to the world. It was cheap and strong and immediately became successful, especially in the making of ladies’ stockings.
During the Second World War, the best present for many women was a pair of nylon stockings, but more importantly, it was used to make parachutes and tyres. Today, nylon is found in many things: carpets, ropes, seat belts, furniture, computers, and even spare parts of human body. It has played an important part in our lives for over 50 years. Next year, about 36 million tons of it will be manufactured.

Coi giùm mình đúng ko nhak

29 tháng 7 2016

III

1) Should Jahn be helped with the sewing ?

2) Judy's car is being repeared by the mechanic .

3) Must the test be finished before ten ?

4) A computer is used to that job nowadays .

5) All travel expenses for this training course must be paid by employers .
 

30 tháng 7 2016

6) Were they taken in by her story .

7) I was kept waiting for half an hour by the bank manager .

8) Has this word been spelt wrongly .

9) He will be seen off at the airport by all his friends ,

10) Beer used to be druck for breakfast in England years ago .

29 tháng 7 2016

II Put the verbs into the most suitable passive form

1) There's someone behind us . I think we are being followed ( follow )

2) A mystery is something that can't be explained ( can't / explain )

3) We didn't play football yesterday .That match was cancalled ( cancle )

4) The televison has been repaired ( repair ) . It's working again now.

5) The church tower is being restored ( restore ). The work is almost finished .

6) How old is the tower ? It is believed ( believe ) to be over 600 years old .

7) If I didn't do my job properly , I would be sacked ( would / sack )

8) A : I left some papers on the desk last night and I can't find them now

    B : They might have been thrown ( might / throw ) away

9) I learned to swim when I was very young . I was taught ( teach ) by my mother .

10) After being arrested ( arrest ), I was taken to the police station .

11) This road is being repaired ( repair ) so we have to take another road .

12) Two people are reported ( report ) to have been injured ( injure ) in an explosion at a factory early this morning .

13) I haven't receive the letter . It might be sent ( might / send ) to the wrong address .

14) The vegtables didn't taste very good . They had been cooked ( cook ) for too long .

15) The examination papers are scored by machine . The students will be told (tell) their results next week .

29 tháng 7 2016

Nhìn là biết bạn sai nốt bài I rồi

28 tháng 7 2016

???? đâu bạn

Mình quên đăng nek

30 tháng 7 2016
  1. who 
  2. that
  3. which 
  4. whose 
  5. that
  6. that
  7. which 
  8. who 
28 tháng 7 2016

1. An island is surrounded by water.

2. I was invited to the wedding but I couldn't come.

3. Many accidents are caused by reckless driving.

4. A new dormitory are being built in the campus at present.

5. A lot of the trees were blown down in a storm a few days ago.

6. Some politicians have been murdered by terrorists recently.

7. The concert will be shown at the university next Sunday.

8. This money box has been hold for five years.

9. The electric light bulb was invented by Thomas Edison.

10. The -ing form of 'sit' is spelt with a double t.

11. The accident was written in the newspaper yesterday.

12. Mickey Mouse cartoons are translated into sixty languages.

13. The election results will be reported at the end of this month.

14. This program is collected by students at Stanford University.

15. Thanks godness! My jewellery wasn't stolen in the robbery last night.

Chữ sory nhak. Mình đánh thành 2 r sory

30 tháng 7 2016

hơi bj nhỏ phải ko bn

9 tháng 9 2016

1. few -> little

2. a little -> some

3. a little -> some

4.few -> many

5. few -> many

6. few -> little

Còn lại bạn tự làm nhé.

9 tháng 9 2016

1       a few\(\rightarrow\)a little

 

30 tháng 7 2016

- I was kept waiting for half an hour by the bank manager.

- Has this word been spelt wrongly?

- He will be seen off at the airport by all his friends.

- Beer used to be drunk for breakfast in England years ago.

- The letter might have been sent to the wrong address.

- The floor was being cleaned when I arrived.

- The hole is being digged on the wrong side of the road.

- Your money is going to be stolen if you're not careful.

- Have you ever been asked for your opinion?

- I am not impressed by Alan's knowledge of art.

- How are candles made?

- Tea can't be made with cold water.

- When is the results of the contest going to be announced?

- The police wasn't informed that there had been a mistake.

- Where will you be sent by your company next year?

- The children were looked after by whom when you were away?

- Look! The seals are being fed.

- The book had been returned to the library by Kathy.

- By this time tomorrow, the announcement will have been made by the president.

- People's breathing was being affected by the pollution in the city.

-Those papers haven't been signed by Mrs.Andrew yet. Have they been signed by Mr.Andrew yet?

- Is that airplane being flown by a student pilot?

- Where was the 1988 Olympic Games held?

-Are those tractors made in this country, or are they imported?

30 tháng 7 2016

1.Should Jane be helped with the sewing?

2.Judy's car is being repaired by the mechanic.

3.Must the test be finished before ten?

4.A computer is used to do that job nowadays.

5.All travel expenses for this training course must be paid by employers.

6.Were they taken in by her story?

10 tháng 11 2016

chữ go ( 1 like thôi cũng đủ )

10 tháng 11 2016

1000 like hum có muốn cũng không đc hahahiha