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10.-These days the air has been heavy with PM 2.5,and it's hard to see.
-Yes,but sometimes it ______ also be clear,especially after a rain.(  )
A.needB.canC.mustD.might

分析 句意:-这几天空气污染很严重,达到PM2.5,很难看清.--是的,但是有时候会清楚的,尤其是在雨后.

解答 答案B."need"需要;"can"能够,可能,有时会;"must"必须,肯定,偏偏;"might"可能.根据句意,:-这几天空气污染很严重,达到PM2.5,很难看清.--是的,但是"有时候会"清楚的,尤其是在雨后.故选B.

点评 本题考查情态动词,要掌握词义并结合具体的语境选择出正确选项.

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