题型：问答题 简答题 现在我们的餐桌已愈来愈离不开肉类食品。一般情况下，当羊肉和牛肉两种商品其中的一种价格下跌后，所产生的影响是（ ）①消费者会减少对该商品的需求 ②消费者会增加对该商品的需求 ③另一种商品的需求量将增加 ④另一种商品的需求量将减少 A．①②B．③④C．①③D．②④ 查看答案
题型：问答题 简答题 所有的病毒都生活在其他生物体的____或____，并从这些生物体获得特殊生活必须的____和_________。这种营养方式称为寄生。在生态系统中，寄生性微生物属于_________。 查看答案
题型：问答题 简答题 完形填空。 Linda was a few minutes late. Wilson 1 the office when she got there. His secretary told herhe 2 back in a few minutes. She 3 sit down and wait for a few minutes in outer office. "I'll never get this job," she 4 herself. For a moment she wanted to 5 the building. Just then,Wilson came 6 the door and hurried into his office. A few minutes 7 his secretary took Linda in and introduced her, Linda apologized 8 . Wilson didn't seem to 9 .They chatted casually (随便地) for a few seconds and then 10 . He 11 her letter of application. "You've never worked in radio or television before, 12 ? "he said. Now she was 13 that she would not get the job. Wilson asked her 14 questions. 15 he seemed impressed with her other qualifications(资格).She was 16 when he asked herif she could start soon. "I wonder if you'd mind 17 next month?" he asked 18 . 19 seemed she had got the job 20 .( )1. A. had left ( )2. A. had been ( )3. A. should ( )4. A. told ( )5. A. run out ( )6. A. through ( )7. A. latest ( )8. A. to being late ( )9. A. mind ( )10. A.took down with business ( )11. A.filled out ( )12. A. haven't you ( )13. A. even more sure ( )14. A. a few such ( )15. A. As her surprise ( )16. A. even more surprise ( )17. A. starting ( )18. A. by a smile ( )19. A. It ( )20. A. not at all B. has left B. came B. had to B. spoke B run of B. across B. last B. for being late B. listen B. came down tobusiness B. took out B. do you B. much sure B. a few more B. To her surprised B. even much surprise B. to start B. with a smile B. This B. after all C. was left C. was C. would C. said C. run out of C. cross C. late C. to be late C. notice C. settled down with businessC. sent out C. have you C. even sure of C. much a few C. For her surprised C. even more surprised C. start C. by smile C. That C. all D. would be leaving D. would be D. was able to D. talked D. run away D. along D. later D. for the late D. hear D. got down to businessD. threw away D. don't you D. sure of D. more a few D. To her surprise D. even much surprised D. started D. with smile D. He D. after that 查看答案