(While) experts in basic science are important, (skilled talents) should be the (overriding) majority since they are (at heavy d

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问题 (While) experts in basic science are important, (skilled talents) should be the (overriding) majority since they are (at heavy demand) in the market.

选项 A、While
B、skilled talents
C、overriding
D、at heavy demand

答案D改为in heavy demand

解析 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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