练习册

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    污染 【查看更多】

     

    题目列表(包括答案和解析)

    ________(污染) air is harmful to your health.

     

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    ________(污染) air is harmful to your health.

     

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    Air ______(污染) are beginning to draw more and more attention.

     

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    与很多受污染的城市相比，青岛的空气干净多了。(compared with)

     

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    .______________________________(受到严重污染), it may be a bit too late to protect the river.(suffer)

     

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