Substances will expand or contract ______ heated or cooled, but this is not the

题型：不详难度：来源：

Substances will expand or contract ______ heated or cooled, but this is not the case with water.

A．when they will be	B．if they will be
C．as they being	D．when

答案

解析

略

举一反三

It will not be long _____man can harness the solar energy and make it serve mankind.

A．since

B．before

C．when

D．after

题型：不详难度：| 查看答案

It was found that although the girl could perceive things with her fingers, this ability ceased _____ her hands were wet.

A．the moment when

B．the moment

C．in that moment

D．before

题型：不详难度：| 查看答案

_____ human beings live in great numbers, the waters are very likely to become contaminated.

A．That

B．Where

C．Even if

D．Though

题型：不详难度：| 查看答案

____ I saw her, I remembered to give Marie the money I owed her.

A．While

B．Immediately

C．Suddenly

D．Momentarily

题型：不详难度：| 查看答案

Human be haviour is mostly a product of learning, ____ the behavior of animals depends mainly on instinct.

A．whereas

B．so

C．unless

D．that

题型：不详难度：| 查看答案