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 题目和参考答案——青夏教育精英家教网—

题目内容

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】

【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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( ) 3. A. occurred B. came C. ran D. went

( ) 4. A. full B. half C. bright D. part

( ) 5. A. out of sight B. visible C. big D. clear

( ) 6. A. until B. when C. before D. since

( ) 7. A. part B. all C. any D. none

( ) 8. A. moon B. eclipse C. sun D. shadow

( ) 9. A. each B. every C. either D. all

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( ) 11. A. last B. next C. other D. another

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( ) 17. A. error B. name C. reality D. number

( ) 18. A. blue B. red C. yellow D. grey

( ) 19. A. published B. posted C. printed D. written

( ) 20. A. in B. out C. away D. on

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A．for；in	B．after；for
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