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最佳答案:他们认为二氧化碳使我们上空的云层变薄.It takes a lot of water for shower.
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最佳答案:1. The water suitable for human drinking is becoming less and less.2. In everyda
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最佳答案:There are a huge amount of water in a person's body.If we don't have these water
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最佳答案:1.Are a lot of water drank every day?2.Is the door closed at 5 O'clock?3.Is that