31. It is in the year of 2010        a severe drought hits Yunnan province. A.un

31. It is in the year of 2010        a severe drought hits Yunnan province. A.un

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31. It is in the year of 2010        a severe drought hits Yunnan province.
A.untilB.thatC.beforeD.When

答案
B
解析

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32. ____from Adelaide to Darwin and you’ll observe some of Australia’s most beautiful landscapes.
A.TravelingB.To travelC.TraveledD.Travel

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In the past, ice used to ______ used to ______ the air in a room.
A.be ;coolingB.be; coolC.being; coolD.being; cooling

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According to the periodic table,          still some elements undiscovered.
A.there seem to beB.it seems to beC.it seems thatD.here seem

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22. It was there, the police believe, _________ she was able to activate the recorder she kept in her bag.
A.untilB.whichC.thatD.When

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27.Education reform,         the Chinese government attaches great importance,has
attracted a lot of public attention.
A.in whichB.to whichC.in that D.to that

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