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 Astronomers and scientists think that a black hole is a region of space ______ which matter has fallen and _______ which nothing can escape.

A.into; from                             B.towards; towards

C.out of; from                           D.through; through

 

【答案】

A

【解析】

试题分析:考察定语从句中的介词。本题定语从句的先行词是a region of space。第一空中的介词into是由动词短语fall into…转换而来;第二空的from是有动词短语escape from…转换而来。句意:宇航员和科学家认为黑洞是太空中的一个区域,物质进入了那个区域以后就什么也逃脱不出来了。故A正确。

考点:考察定语从句中的介词

点评:本题是把定语从句中的介词提前到关系代词的前面,定语从句的关系词前面的介词有三种来源:先行词的固定搭配,定语从句中的固定搭配,以及根据句子的意思选择的介词。

 

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