题目

甲、乙两人骑自行车，同时从相距65km的两地相向而行，甲的速度是17.5km/h，乙的速度为15km/h，经过几小时，两人相距32.5千米？ 答案：【答案】本题有两种情况：第一次相距32.5千米，设经过x小时两人相距32.5千米，根据题意得：(17.5+15)x=65−32.5，解得：x=1；第二次相距32.5千米，设经过x小时两人相距32.5千米，根据题意得：(17.5+15)x=65+32.5，解得：x=3.答：经过1小时或3小时两人相距32.5千米.【解析】两人相距32.5千米应该有两次：还未相遇27、    Long ago, there lived in Greece a learned man. He was so well—known for his wide knowledge of almost everything that lots of people from all over the country came to learn things from him. The great man taught his students whole—heartedly and answered their questions with great patience.     One day a student asked him, “My dear teacher, didn’t you say you yourself have many, many more questions about things than we do? On the contrary(相反)，we students have far more than you.”     With a smile, the teacher drew two circles—One as large as a big wheel, the other smaller. “Of course, I’ve learned much more. But a teacher does not necessarily have fewer questions than his students. Now, look at these two circles. Within the big one is my knowledge of things, and within the smaller one yours. Out of the circles is what is still unknown to us. Since mine is larger, the line that marks out the circle is longer. That means I have more chances to face what is still unknown. And that’s why I myself have more questions than you do. The more you learn, the more questions you have. You will never learn enough, you know. 1. One of his students didn’t agree that _________.   A. the teacher should have so many questions   B. the teacher had so many questions as the students   C. the students had more questions than the teacher   D. the teacher had more questions than the students 2. Which of the following pictures tells rightly what the teacher drew? 3. The teacher draws two circles in order to show _______.   A. why he had more questions than the students   B. how one could again more knowledge   C. he knew a lot and was good at drawing   D. what the students learned something to do with the circles. 4. The passage mainly tells us that _______.   A. we should learn from a learned man   B. we’ll never learn enough   C. a teacher should be patient   D. it is never too old to learn 5. The teacher was very famous for _______.   A. his patience  B. the drawing   C. his knowledge  D. his help to the students 评卷人 得分 五、书面表达 （每空？ 分，共？ 分）