Seeing the chemical ________ to the sunlight, Mr. Lee warned the workers to be c
题型：不详难度：来源：
Seeing the chemical ________ to the sunlight, Mr. Lee warned the workers to be careful when dealing with it.| A．to expose | B．exposing | C．exposed | D．being exposed |
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答案
| C |
解析
试题分析：考查过去分词做宾语补足语，see+宾语+宾语补足语，the chemical和expose是被动关系，用过去分词做宾语补足语，句意：看见化学物质暴露于阳光下，专家警告工人处理的时候要当心。选C。
点评：宾语补足语如果是动词的话，要考虑动词和它修饰的宾语的关系，是主动关系用现在分词，是被动关系用过去分词。 |
举一反三
With the development of modern society, E-mail as well as telephones an important part in daily communication.| A．have played | B．is playing | C．are playing | D．played |
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By the time she ________ home, her parents will have prepared some delicious food for her. | A．will get | B．will have got | C．is getting | D．gets |
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---Don"t put the waste on the ground.
---Oh, I"m very sorry. I ________ the dustbin（垃圾箱） there. | A．don"t see | B．isn"t seeing | C．didn"t see | D．haven"t seen |
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So far this year we ________ a fall in house prices by between 5 and 10 percent.| A．saw | B．had seen | C．have seen | D．see |
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______ of danger in the street at night, she had to go home, with a friend _____ her.| A．Warned ; accompanied | B．Warning; accompanying | | C．Having warned; accompanied | D．Having been warned; accompanying |
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