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题目
题型:不详难度:来源:
Up to now, our society ________ with limited living space and a shortage of natural resources.
A.has been challengedB.is being challenged
C.is challengingD.has challenged

答案
A
解析
A 考察动词时态和语态。句义:到目前为止,我们的社会一直面试着生存生成空间有限和自然资源匮乏的挑战。Sb/sth be challenged with sth意为“某人/某物面临着…挑战”,为习惯用法;根据时间状语up to now可知,应用现在完成时。故A正确。
核心考点
试题【 Up to now, our society ________ with limited living space and a shortage of nat】;主要考察你对现在完成时等知识点的理解。[详细]
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