单项选择题

58（）

A．so
B．very
C．quite
D．too

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问答题

They are trying to develop a convincing theory to explain how the needles work in preventing pain, or why a needle in the wrist, for example, would prevent the pain in the area of the mouth. ( Passage 3 )

单项选择题

Why does an astronaut put his hand under his belt when he sleeps（）

A．Because he thinks it is comfortable to sleep in that way in space.
B．Because he doesn’t want to touch any controls when he sleeps.
C．Because the instruments of the spaceship are easily broken.
D．Because he is afraid that the seat will mov