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    精英家教网 > 高中英语 > 题目详情
    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
    A
    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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