单项选择题

How often is physical science more accurate than biological science（）

A．Never.
B．Always.
C．Usually.
D．Occasionally.

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热门试题

单项选择题

What is the author of this passage saying about meteorology（）

A．It is becoming more accurate.
B．It is more accurate than the biological sciences.
C．It is more accurate than some of the measurements of structural engineers.
D．It is relatively inaccurate.

单项选择题

Why didn't he eat anything（）

A．He had forgotten to bring any food with him.
B．He was afraid he would fall asleep if he should eat anything.
C．He was not hungry.
D．It was difficult to eat while flying a plane.