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ThepressurecausesAmericanstobeenergetic,butitalsoputsthemunderaconstantemotionalstrain.A.tocompeteB.competingC.tobecompetedD.havingcompeted为什么应该选A?12

题目详情
The pressure ________ causes Americans to be energetic,but it also puts them under a constant emotional strain.
A.to compete B.competing C.to be competed D.having competed
为什么应该选A?
12



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答案和解析
这个非要选A的话
那只能理解成to compete这个动词不定式做pressure的定语了