【简答题】听下面一段材料,回答第1-4题。 1. Where does the fresh water people need come from? A. Rivers and lakes. B. Underground. C. Both A and B. 2. How much water can we drink of all the water the world? A. 3%. B. 97%. C....
【简答题】听下面一段材料, 回答第1-3题。 1. Where does the fresh water people need come from? [ ] 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? [ ...