In the past, the study of (1)…..was mainly carried out by astronomers using telescopes. However, (2)… .sometimes had it wrong. Meanwhile, apart from the desire to conquer the world around, humans also want more space to accomodate the world’s increasing(3)….

Owing to the developments in space technology, humans have made spectacular explorations and discoveries of the space. The (4)… .can be conducted either by unmanned robotic probes or by human spaceflights.

Undeniably, those achievements have been made quickly as a (5)……of the “space race” by the Soviet Union and the United States. Within more than two(6)……, from the beginning of 1950s to 1970s, the two nations launched many of the milestones, from launching living beings into space to launching flybies to observe (7)…….

However, the biggest achievement of the 21st century has been the cooperation in launching the International Space Station, (8)….. serves as space environment research laboratory for experiments in many fields. It is also suited for the testing of spacecraft (9)….. and equipment required for missions to the Moon and Mars. Hopefully, in the near future, space technological advancements will soon allow us to (10)…… habitable space environment.

     In the past, the study of (1)…..was mainly carried out by astronomers using telescopes. However, (2)… .sometimes had it wrong. Meanwhile, apart from the desire to conquer the world around, humans also want more space to accomodate the world’s increasing(3)….

Owing to the developments in space technology, humans have made spectacular explorations and discoveries of the space. The (4)… .can be conducted either by unmanned robotic probes or by human spaceflights.

Undeniably, those achievements have been made quickly as a (5)……of the “space race” by the Soviet Union and the United States. Within more than two(6)……, from the beginning of 1950s to 1970s, the two nations launched many of the milestones, from launching living beings into space to launching flybies to observe (7)…….

However, the biggest achievement of the 21st century has been the cooperation in launching the International Space Station, (8)….. serves as space environment research laboratory for experiments in many fields. It is also suited for the testing of spacecraft (9)….. and equipment required for missions to the Moon and Mars. Hopefully, in the near future, space technological advancements will soon allow us to (10)…… habitable space environment.

a.       If we don’t hurry, all the tickets (1- sell) _______ out by the time we get there.

b.      It is crucial that Dido (2- stop) _______  using our music in her performance.

c.       The vase broke when it (3- move) _______  to other room.

d.      Had it not been for your help, we _______(4- be)  in big trouble now.

e.       When I entered his room, I saw him (5- sleep)  _______in a chair.

f.       Hardly he (6- take)______ up the book when the phone (7- ring)________.

g.      He resented (8- ask) ________ (9- wait) _______. He had expected the minister to see him at once.

h.      I’d rather you (10- not tell) _________ her the truth.

11. Please give the handicapped some ______ (CONSIDER) when building stairs.

12. Mr. Lim has been having ______ (FINANCE) problems for a long time.

13. We need to give our local stars a lot of ______ (PUBLIC).

14. Money is ______ (SECOND). Family comes first.

15. She displayed her ______ (WILLING) to help him by giving him a cheque.

16. More local ______ (NOVEL) are getting recognition for their work.

17. Can I have an ______ (EXTEND) on the dateline of my project ?

18. It was ______ (COINCIDE) that both our birthdays fell in the same day.

19. A _____ (NURSE) for children has just opened near my workplace.

20. Angie is quite ______ (TOLERATE) of the screaming of her children.

1. It's ____________ the law to employ children under the age of 14.

A. in                            B. break                       C. against                    D. under

2. This is a/an ____________ computer so you can take it anywhere.

A. old-fashioned         B. hand-held               C. touch-sensitive       D. built-in

3. Modern computers have become totally ________ so even young children can operate them.

A. well-known                        B. user-friendly           C. hi-tech                    D. widespread

4. What a terrible film! We really ____________ our time watching it.

A. wasted                    B. spent                       C. saved                      D. took

5. Even though my granddad’s 80 years old, he has excellent eye ____________. 

A. see                          B. look                                    C. sight                        D. vision

6. __ television images appear on the screen at the same time as we hear the audio through the speakers.

A. Visual                     B. Vision                     C. Sight                       D. See

7. You use your sense of ____________ to pick up things.

A. feel                         B. hold                                    C. touch                      D. hand

8. It was ____________ hot last week. Temperatures reached 40 degrees.

A. freezing                  B. soaking                   C. pouring                   D. boiling

9. ____________ sports are sports     where people touch each other.

A. Spectator                B. Team                       C. Contact                   D. Extreme

10. My mum really wants us to go on a ______, but I don't like the idea of spending a week on a boat.

A. voyage                    B. journey                   C. travel                      D. cruise

Viết lại câu

1. Marcella left home very early because she wanted to be sure off caching the train (ORDER)

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2. You must show your student card as you enter the library (REQUIRED) 

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3. On arriving at the airport, I usually go straight to the check-in desk (SOON)

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4. Patrick hadn’t heard from his uncle in Autralia for over five years (MORE)

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Có 5 dung dịch 0,1M đựng trong 5 lọ mất nhãn Na2CO3; Ba(OH)2, NaOH, KHSO4, KCl. Nếu không dùng thêm thuốc thử có thể nhận biết được dung dịch nào.