四、完形填空。
Most of us dreamed of becoming an astronaut when we were young. But how many of us have 1 become astronauts?
The advice “Always follow your dreams” is something that is usually 2 said than done. But still，this is one piece of advice 3 Alyssa Carson wants to share with her peers(同龄人). This girl from the USA has 4 one of the candidates(候选人) for NASA’s 2033 project to go to Mars. If 5 goes well，Carson will be one of the first humans to set foot on the red 6 .
Carson has dreamed of going to Mars 7 she was only three. After watching an astronaut - themed cartoon and hearing that humans had only been to the Moon but not Mars，Carson 8 to be the first one to do so. Since then，she has worked hard for this goal. Carson became the first person to 9 all the three NASA Space Camps，and she sat with real 10 to discuss the future of Mars.
Carson was continuing with her space training while still taking on her schoolwork 11 a “normal” student，except that she studied all her subjects in four 12 —English，French，Spanish and Chinese. And Carson is willing to devote herself to her dream. She’s 13 of the danger during the journey to Mars. She also accepts the fact that she might never 14 come back. 15 Carson believes it is worth taking the risk.
1. A. rapidly
B. finally
C. specially
D. completely
2. A. further
B. faster
C. later
D. easier
3. A. that
B. who
C. when
D. why
4. A. become
B. compared
C. regretted
D. spread
5. A. nothing
B. everything
C. something
D. anybody
6. A. helmet
B. tank
C. planet
D. alien
7. A. though
B. whether
C. unless
D. since
8. A. discovered
B. doubted
C. decided
D. divided
9. A. explore
B. increase
C. float
D. attend
10. A. composers
B. explorers
C. astronauts
D. strangers
11. A. like
B. with
C. for
D. to
12. A. languages
B. methods
C. forms
D. standards
13. A. afraid
B. aware
C. forgetful
D. unsure
14. A. be useful to
B. be able to
C. be similar to
D. be used to
15. A. So
B. Or
C. And
D. But

1~5. BDAAB 6~10. CDCDC 11~15. AABBD