英语四级

单选题It was the first time that such a ________ had to be taken at a British nuclear power station.

A．presentation
B．precaution
C．preparation
D．prediction

参考答案：B进入在线模考
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1________ that he wasn’t happy with the arrangements, I tried to book a different hotel.

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2The board of the company has decided to ________ its operations to include all aspects of the clothing business.

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