题目内容

3) The man mainly used the six months to think about _ projects. He says he could let his brain think of new and interesting things to develop without ______.

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4) The man says he is very , he is never late to work, and he always gets his projects done before the _____________.

5) The man also says he enjoys working with people, and he can __________ well with others.

圆球三面投影都为（）

A. 圆
B. 椭圆
C. 半圆

圆球表面取点的方法为（）

A. 辅助圆法
B. 辅助素线法
C. A和B都可以