A．that has

B．who was

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D．where was

　　A few days ago, few people knew his name or his face. But last Thursday, when he came back to the earth after a 21-hour trip to space, Yang Liwei's smile was seen across the world.

　　The 38-year-old astronaut (宇航员) was sent into space at 9:00 am, last Wednesday by China's Shenzhou V Spaceship, and it travelled round the earth 14 times. He landed safely at 6:23 am, the next day. That made China the third country to successfully send a person into space, after the former Soviet Union and the USA.

　　Yang was pleased with his job. “I have seen many landing scenes ever before on video tapes, and I think ours was one of the most successful,” he said on a special plane to Beijing after landing.

　　Anybody who saw the breaking-up of the US space plane named Columbia in February of 2003 knew that Yang was in great danger.

　　Yang experienced very high temperature, while the gravitational forces (地心引力) on taking off and landing were strong enough to make tears from his eyes.

　　He has spent five years training to become a spaceman after 1350 hours' flying in the air. Although it was hard work, Yang loved it. Yang's success was well worth all the hard work. Yang has become China's first spaceman.

(1) Shenzhou V spaceship spent ________ travelling round the earth at a time.

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(2) How many countries have sent spaceships with persons up into space successfully?

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(3) While the spaceship takes off from the earth, what does the astronaut have to experience?

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(4) By which spaceship was Yang Liwei sent into space?

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(5) How long has it taken Yang Liwei to train flying in the air to become a spaceman?

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