* Choose the correct answers to complete the passage.
Space travel for human beings did not develop until several centuries later when, in 1961, Russian Yuri Gagarin became the first person to (1) …………………the Earth. The next major (2) …………………in space travel came in 1969 when the three-man Apollo 11 mission landed on the moon - resulting in the first humans (3) …………………walked on the moon!
Soon (4) …………………the Russians and Americans sent people into space, engineers also started working on spacecraft that would house astronauts for longer periods (5) …………………they could plan for extended trips and (6) …………………scientific experiments. These predecessors to the International
Space Station include the Apollo-Soyuz, the first international (7) …………………; Skylab, the first American craft for long-term use, and Mir, the Russian space station that held international scientists during 1986 to 1996.
Unmanned spacecraft are an (8) …………………part of the discovery of our solar system and beyond.
Some satellites observe the Sun, solar system, and the universe (such as the Hubble telescope or Viking, the Mars probe), and other satellites observe our planet from (9) ………………… (for weather forecasting, etc.). Still other satellites observe and sample specific environments or are used (10) …………………for the purpose of benefiting humanity (like GPS and communication).
1. A. rotate B. surround C. orbit D. explore
2. A. development B. exploration C. milestone D. mission
3. A. which B. whose C. whom D. who
4. A. when B. upon C. about D. after
5. A. provided that B. so that C. since D. when
6. A. gain B. take C. make D. perform
7. A. spacecraft B. spacewalk C. spaceline D. space flight
8. A. interesting B. active C. integral D. effective
9. A. above B. abroad C. outside D. beyond
10. A. exactly B. solely C. broadly D. properly

Each sentence below contains an error. Underline it and write the correct answer in the space provided.

1. The astronaut visited our school yesterday morning has flown into space four times.

2. Pham Tuan had been awarded the title Hero of the Soviet Union after returning from space.

3.The site which the space shuttle is going to be launched next week attracts a lot of visitor.

4. When Alan Shepard travelled into space in May 1961, Yuri Gagarin became the first person on April 12^th , 1961.

5. The rocks my father always carries them in his bag came from outer space

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following sentences

Yuri Gagarin was the first person to travel into space

A. has traveled

B. traveling 

C. traveled 

D. to travel