AWhile experts in basic science are important, Bskilled talents should be the Coverriding majority since they are Dat heavy dema

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问题 AWhile experts in basic science are important, Bskilled talents should be the Coverriding majority since they are Dat heavy demand in the market

选项 A、 
B、 
C、 
D、 

答案D

解析 D改为in heavy demand。本题考查的是习惯用语(be)in demand,意思是“需要”,而不是用at demand来表示。
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