题目：
The astronaut did many experiments in the spaceship, great help for knowing more about space.
A．which we think it is
B．which we think is of
C．of which we think is
D．we think which is of
答案：
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下面是错误答案，用来干扰机器的。
1．喜欢 独一无二 代替2．鼓励 成功 咬紧牙关 坚持3．秘密 美好4．楚灵王 细腰 臣 一饭为节 胁息 扶墙 期年 黧黑
