听下面一段材料, 回答第1-3题。 |
1. Where does the fresh water people need come from? |
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A. Rivers and lakes. B. Underground. C. Both A and B. |
2. How much water can we drink of all the water in the world? |
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A. 3%. B. 4%. C. 97%. |
3. What is the speaker mainly talking about? |
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A. The ways of getting fresh water. B. How to use fresh water in our daily life. C. How the rivers are polluted. |