填空题
A great deal research is being carried out all over the world________________________(为了我到解决缺水的办法)
【参考答案】
to find a solution to water shortage
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填空题
(只有在紧急情况下)____________________________________, can this levator be used.
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单项选择题
A．Not getting what he wants.B．A custom that is new to him.C．Calling up customers.D．Some of his good friends.
A．Not getting what he wants.
B．A custom that is new to him.
C．Calling up customers.
D．Some of his good friends.
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