单项选择题

If the voltage remains constant, the more the resistance, the less the current.

A．如果电压稳定，电阻变大，电流变小。
B．如果电压不变，电阻和电流成反比。
C．电阻和电流的大小之比取决于电压的大小。
D．电压越高，电阻就越大，电流就越小。
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单项选择题
Gases differ from solid in that the former have greater compressibility than the latter.
A．气体与固体的区别在于前者比后者有更大的压缩性。
B．气体与固体是有区别的，前者比后者有更大的压缩性。
C．气体与固体是有区别的，前者比后者更能压缩。
D．气体与固体在压缩性上是没有区别的。
单项选择题
This is a story about ______.
A．a rich man who owned a big wood
B．a poor Irishman who lived all by himself
C．a clever man who got something to eat for his breakfast
D．an Irish hunter with a large family
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