短文填空 The most important drink is water. Not many people understand this but it is quite t  1 . People can l  2 for a long time without food, but they will die if two or three days w  3 water. In h  2 weather, many people do not drink e  5 water, because they don’t know how much water they n  6 . After t  7 exercise, people need more water. The water in man’s body is m  8 more than other matters(物质). We’d better have enough water, or we may get i  9 . Water is n  10 to all the living things. There will be no l  11 if there is no water. So we must save water and don’t w  12 water.