Scientists have been worried for years about the ________ of air pollution on th
题型:同步题难度:来源:
Scientists have been worried for years about the ________ of air pollution on the earth"s natural conditions. |
[ ] |
A. effect B. reason C. account D. cause |
答案
A |
举一反三
A dog"s________to his master deserves to be respected. |
[ ] |
A. devotion B. principle C. identity D. guidance |
The man was determined to deal with the problem on his own and turned down ______ of help. |
[ ] |
A. invitations B. offers C. applications D. comments |
If you take my ________,you"ll make a lot of money in the trade. |
[ ] |
A.command B.principle C.attitude D.tip |
The Chinese ________ for crisis consists of two words-Wei Ji, the former meaning danger and the latter referring to opportunities. |
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A.expression B.impression C.explanation D.information |
I haven"t seen Sara since she was a little girl, and she has changed beyond________. |
[ ] |
A.hearing B.strength C.recognition D.measure |
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