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Up to now, our society ________ with limited living space and a shortage of natural resources.

Ahas been challenged Bis being challenged

Cis challenging Dhas challenged

 

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。

 

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