填空。 When you look into the sky at night, you can see a large number of stars. Besides, you can see the 1 too. It's bright 2 beautiful. People write many songs and poems (诗歌) 3 it. In the 1960s, some 4 wanted to be the first one to send a man to the moon. America and Russia were in this 'space race'. They 5 a lot of money 6 it. The 7 man in space was Yuri Gagarin, a Russian. He went into the space 8 1961. A few years later, an American spaceship flew to the moon. Neil Armstrong walked out. He was the first man 9 on the moon. China is interested in the space too. In 2003, Yang Liwei, China's hero, flew 10 the earth in space. (     )1. A. moon (     )2. A. but (     )3. A. on (     )4. A. country (     )5. A. spend (     )6. A. on (     )7. A. first (     )8. A. on (     )9. A. walk (     )10. A. around B. sun B. and B. about B. city B. spent B. in B. second B. at B. walking B. to C. earth C. or C. of C. cities C. cost C. to C. third C. in C. to walk C. towards D. stars D. / D. from D. countries D. took D. about D. fourth D. of D. walks D. through