2. 职称英语
  3. We should open the windows often to let ______ in.A、the fresh airB、fresh airC、

We should open the windows often to let ______ in.A、the fresh airB、fresh airC、

游客2023-10-28  73
问题 We should open the windows often to let ______ in.
选项 A、the fresh air
B、fresh air
C、a fresh air
D、fresh the air
答案 B
解析 考查冠词。物质名词、抽象名词在用来表示一般概念时通常不加冠词，因此本题的答案应该是B。
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