【正文】
polluted (污染 ) . Now more water is needed. The problem is: Can we avoid (避免 ) a serious water shortage later on? First, we should all learn how to save water. Secondly, we should find out the ways to reuse it . Scientists have always been making studies in the field. Today, in most large cities water is used only once and then runs to the sea or rivers . But it can be used again. Even if (即使 ) every large city reused its water, still there would not be enough. What could people turn to next? The sea seems to have the best answer. There is a lot of water in the sea. All that needs to be done is to get the salt out of the sea water. This is expensive, but it39。s the Chinese of study by themselves? A. 和他們一起學(xué)習(xí) B. 自學(xué) C. 向他們學(xué)習(xí) D. 通過學(xué)習(xí) B Once upon a time, there lived a rich man. He had a servant (仆人 ). He and the servant loved wine and good food very much. Each time the rich man left his home, the servant would drink the wine and eat up all the nice food in the house. The rich man knew what his servant did, but he had never caught his servant doing that. One morning, when he left home, he said to the servant, “Here are two bottles of poison (毒藥 ) and some nice food in the house. You must take of them.” With these words, he went out. But the servant knew that the rich man had said was untrue. After the rich man was away from his home, he enjoyed a nice meal. Because he drank too much, he was drunk and fell to the ground. When the rich man came back, he couldn’t find his food and his wine. He became very angry. He woke the servant up. But the servant told his story very well. He said a cat had eaten up everything. He was afraid to be punished(懲罰) , so he drank the poison to kill himself. ( ) the story, _______ liked wine and good food very much. A. the rich man B. the servant C. both A and B D. neither A and B ( ) rich man knew that it was _______ that drank the wine and ate up all the nice food. A. the cat B. himself C. nobody D. the servant ( ) rich told the servant that there was poison in the two bottles, because ________. A. there was in fact poison in the bottles B. did not want the servant to drink his wine C. he wanted to kill the cat D. he wanted to kill the servant ( ) fact, _______ ate all the nice food and drank the wine. A. the servant B. cat C. the rich man D. nobody ( ) the story, we know that the servant is very _______. A. lazy B. bad C. clever D. kind C The world is not hungry , but it is thirsty . It seems strange that nearly 3/4 of the earth is covered with water while we say we are short of (短缺 ) water. Why? Because about 97% of water on the earth is sea water which we can39。t B. No, they are C.