安全着陆——青夏教育精英家教网——

9.安全着陆________

8.回到地球大气层_____

7.做第七次环行________　

6.第六次________

5.21小时的太空飞行______

4.因为________

3.和……分离_______

2.发射，升空__________

1.第一架载人宇宙飞船_______

5. They are s_____ for their rights.

答案：struggling

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