以下计算结果正确的是（ ） A．tan245°=1 B．-3-27=-3 C．a2=a 发布时间：2017-06-06 23:14 │ 来源：www.tikuol.com 题型：选择题 问题： 以下计算结果正确的是（ ）A．tan245°=1B．-3-27=-3C．a2=aD．16=±4
题型：选择题 关于电流与电压的说法，正确的是（ ）A．电路中有电流时，就一定有电压，因为电压是产生电流的原因B．电路中只要有电压，就一定会有电流C．导体内有大量的自由电荷，只要构成通路，导体中就会有电流D．以上说法都不正确 查看答案
题型：选择题 完型填空。 I did very badly at school. My headmaster thought I was 1 and when I was 14 he said, "You're never going to be 2 but a failure." After five years of 3 jobs, I fell in love with a very nice middle-class girl. It was the best 4 that could have happened to me. I 5 I wanted to do something positive (积极地) with my life because I wanted to prove to 6 that what people said about me was 7 . Especially her mother, who had said to me, "Let's 8 it, you've failed at everything you've ever done." So I tried hard with my 9 and went to college. My first novel 10 while I was at college. After college I taught during the 11 in high schools and attended evening classes at London University, where I got a 12 in history. I became a lecturer at a college and was thinking of 13 that job to write full time 14 I was offered a part-time job at Leeds University. I began to feel proud of myself - 15 was a working-class boy who'd 16 school early, now teaching at the university. My writing career (职业) took off when I discovered (发现) my own style. Now I'm rich and 17 , have been on TV, and met lots of film stars. 18 what does it mean? I 19 wish all the people that have put me down had 20 :"I believe in you. You;ll succeed." ( )1. A. bright ( )2. A. anything ( )3. A. low ( )4. A. support ( )5. A. admitted ( )6. A. me ( )7. A. wrong ( )8. A. see ( )9. A. experiment ( )10. A. came on ( )11. A. day ( )12. A. graduation ( )13. A. giving in ( )14. A. while ( )15. A. there ( )16. A. left ( )17. A. tired ( )18. A. And ( )19. A. just ( )20. A. praised B. useless B. something B. poor B. happiness B. decided B. them B. right B. know B. practice B. came in B. night B. pass B. giving back B. if B. here B. attended B. calm B. But B. exactly B. said C. simple C. everything C. good C. surprise C. planned C. her C. stupid C. understand C. writing C. came out C. month C. degree C. giving out C. when C. it C. changed C. nervous C. However C. so C. answered D. hopeful D. nothing D. useful D. thing D. told D. it D. faulty D. face D. composition D. came back D. year D. success D. giving up D. or D. that D. graduated D. famous D. Well D. very D. advised 查看答案