The biggest challenge weall face is to prevent further environmental disasters. We ________ take action before it is too late.
- A.can
- B.must
- C.may
- D.might
正确答案及解析
正确答案
B
解析
句意：我们面临的最大挑战是防止进一步的环境灾难。我们必须采取行动，否则就太晚了。
考查情态动词。can能，会；must必须；may可能；might可能。根据“The biggest challengewe all face is to prevent further environmental disasters.”可知，问题比较严重，所以必须采取行动。故选B。
包含此试题的试卷
你可能感兴趣的试题
Dogs are the best pets of humans. They come in all sizes. Some dogs are as small as a football, and others are as tall as a desk. Dogs’ fur (毛) is different, too. It can be long and soft, or smooth and hard. People don’t mind the kind of fur, because all dogs are good to hug.
- 查看答案
请在字典中查一下这个词。
- 查看答案
我喜欢甜食， 你知道的。
- 查看答案
去年， 彼得在旅途中和许多人交了朋友。
- 查看答案