Up to now, our society with limited living space and a shortage of natural resources.
A. has been challenged
B. is being challenged
C. is challenging
D. has challenged
Up to now, our society with limited living space and a shortage of natural resources.A.
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解决时间 2021-01-03 03:49
- 提问者网友：椧運幽默
- 2021-01-02 18:05
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- 五星知识达人网友：野味小生
- 2021-01-22 07:05
(答案→)A. has been challengedB. is being challengedC. is challengingD. has challenged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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- 1楼网友：等灯
- 2021-01-22 08:22
对的，就是这个意思
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