Unit 10: Space travel


Fill each blank with a suitable word to complete the following passage. Spaceexploration is the investigation of the universe beyond the Earth’s atmosphere, by (1) ________ of manned or unmanned spacecraft. Despite the technological advancements achieved in the past, space exploration was only (2) _______ until the 20th century. The first successful orbital launch was made by the Soviet Union in 1957 which was called “Sputnik”. When the topic “SPACE EXPLORATION” is put (3)_______ the table, a question has often been asked: “Why should we spend money on NASA while there are so (4) _______ problems here on Earth?” However, this might be partially wrong since exploring the unknown may help us progress. The advantages of space exploration include the materials (5) ________ can be obtained from outer space. For instance, asteroids have iron and nickel which could be utilized to satisfy the (6) ________ for metal. Therefore, numerous commercial companies have invested in developing technology for asteroid mining. Several comets and asteroids (7) ________ solid water in them. This water can be used for astronauts and scientists in space stations. The water can also be broken down to hydrogen which can be used as (8) ______ for the rockets. Scientists also believe that dinosaurs disappeared because they couldn’t go to (9) ________ planet. Sooner or later a killer comet will again cross Earth’s path, threatening all life. Fortunately, (10) _________we have knowledge about comets and space science, we will be able to survive.

Vương Thị Thanh Hoa
9 tháng 4 2019 lúc 16:54

Finish each of the following sentences in such a way that it is as similar as possible in meaning to the original sentences. Use the word given anh other words as necessary

1,The class watced a film yesterday.The film was about the Apollo 13 space mission

->The film which the class watched yesterday was about the Apollo 13 space mission

2.We are meeting an astronomer tonight.This astronomer has discovered three Earth-like planets

->The astronomer whom we are meeting tonight has discovered three Earth -like planets

Bình luận (0)
Cầm Đức Anh
21 tháng 3 2018 lúc 20:58

A. Complete the following sentences, using words given.

1. He/just/ see/the new teacher/ hall/ => He has just seen the new teacher in the hall.

2. The underground/can /use/by most commuters => The underground can be used by most commuters.

3. The driver/ can / pick / them / hotel => The driver can pick them up in the hotel

4. I / tell / him /the truth / if / I / be/ you => I'd tell him the truth if I were you.

5. you’d better/ not/ stay / late. => You'd better not stay up late .

6. She / earn/ her living / by / sell / fruit. => She earns her living by selling fruit.

7. How long/ you / study / English/ ?/ - six months => How long have you studied English?

8. She/ watch/ a mother bird / feed / her babies => She is watching a mother bird feeding her babies.

9. You/ enjoy/ climb/ mountain/? => Do you enjoy climbing the mountain ?

10. Would you mind/ look for / the knife / the kitchen => Would you mind looking for the knife in the kitchen ?

Bình luận (0)

Khoá học trên OLM của Đại học Sư phạm HN


Khoá học trên OLM của Đại học Sư phạm HN