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题目
题型:不详难度:来源:
Although medical science __________ control over several diseases,what worries us is that some of them are returning.
A.achievedB.has achievedC.will achieveD.had achieved

答案
B
解析

试题分析:句意:虽然医疗科学已经控制了几种疾病,我们担心的是有些还会回来。从what worries us is that some of them are returning.可知现在强调的是现在的结果,所以用现在完成时,选B.
核心考点
试题【Although medical science __________ control over several diseases,what worries u】;主要考察你对一般现在时等知识点的理解。[详细]
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