单选题：Paragraph 5 __________

题目分类：卫生类
题目类型：单选题
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题目内容：

Paragraph 5 __________ A．The development of poor night vision
B．The greatest threat to the eyes
C．The function of sunglasses
D．The reason for children's nearsightedness
E．The effects of computer on the eyes
F．The ways to reduce eve comolaints

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答案解析：

The center of a black hole is empty.

The center of a black hole is empty.A．Right B．Wrong C．Not mentioned

分类：卫生类题型：单选题

He began his talk by giving a concise definition of post-mo

He began his talk by giving a concise definition of post-modernism.A．long and d

分类：卫生类题型：单选题

She has proved that she can be relied on in a crisis.

She has proved that she can be relied on in a crisis.A．lived on B．depended on C．

分类：卫生类题型：单选题

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Smoking is not permitted in the office.A．probable B．possible C．admitted D．allowe

分类：卫生类题型：单选题

He achieved success through hard work.

He achieved success through hard work.A．reached B．reaped C．attained D．took

分类：卫生类题型：单选题