题目

 “－3<a<1”是“方程＝1表示椭圆”的________条件． 答案：必要不充分  One will feel happy when others flatter (奉承) him in his face. It is said that the best way of flattering someone is to give him a " top hat"1         .  A student was going to leave the capital to become 2        official in a city far away. Before he started,he came to say 3        to his teacher.  "It is 4        job to be a good official," his teacher said.  "You must be strict 5        yourself and never be careless."  "Don't worry about me,sir," the student answered. "I have already 6        one hundred top hats,which will 7        those people quite happy."  "But we are really gentlemen!8         could a real gentleman do such a thing?" His teacher was a bit 9        "Never forget 10        1 taught you in class!"  "11         are always right,sir. I also hate such things. But,sir,12         no real gentleman like you can be seen in the world now," said the student. It seemed that he had to do so.   13       hearing this,the teacher was pleased. "What you said is true!"  "I have 14        one top hat already. Now I have ninetynine 15        ”， the student said to his friend later on when he asked the student what he had talked with the teacher about.(   ) 1. A. to dress   B. dressing   C. wearing   D. to wear(   ) 2. A. a   B. the   C. an   D. /(   ) 3. A. hello   B. goodbye   C. OK   D. thanks(   ) 4. A. not an easy   B. not easy   C. a good   D. difficult(   ) 5. A. about   B. with   C. from   D. to(   ) 6. A. made   B. bought   C. prepared   D. repaired(   ) 7. A. give   B. let   C. keep   D. make(   ) 8. A. How   B. What   C. Why   D. When(   ) 9. A. pleased   B. angry   C. excited   D. sorry(   ) 10. A. that   B. how   C. why   D. what(   ) 11. A. You   B. We   C. They   D. Us(   ) 12. A. hardly   B. about   C. almost   D. nearly(   ) 13. A. Before   B. After   C. Because   D. If(   ) 14. A. sent out   B. bought   C. sold   D. borrowed(   ) 15. A. left   B. already   C. yet   D. else