题型：填空题 已知函数f(x)=x3+ax2+32x+32a（a为实数）（I）若函数f（x）的图象上有与x轴平行的切线，求a的取值范围；（II）若f（x）在x=-1时有极值，证明对任意的x1，x2∈（-1，0），不等式|f(x1)-f(x2)|＜516恒成立． 查看答案
题型：填空题 完形填空 I'd be 16 in six days and was already prepared to deal with failure.I remember when my mum __1__ me up that morning, her voice wasn't as __2__ as it usually was. I stayed in bed for a few minutes.I was __3__ to leave its warmth and comfort, and didn't want to face the problem that I'd let myself __4__ for the past six months.Finally, I dragged myself out of __5__. I finished getting ready and tried to __6__.It didn't work, so I decided that my __7__ should go with me.We had a little time, so I thought we could practice parking.I __8__, with the wheel hitting the fence.After that, the little bit of confidence I'd had was __9__.I tried two more times, but didn't __10__ much.Then we headed to the test site. I went into a room for some paperwork.And I waited for 20 minutes-just __11__ time to make myself believe that I was going to fail.Then, finally, it was my __12__.I just wanted to get it over and make sure that I had to come back next Thursday. I stepped outside and the sky was the light blue I love.It offered me some __13__ and I realized something: something between when I pulled myself off the seat and when I got outside.I had become __14__ and confident. The first thing I had to do was parking, which I did quite __15__.The confidence that came with it hit me like a wave.The rest of the test went well too and I __16__ it all.As I drove back, the instructor told me I would not be coming back for a second __17__ next Thursday. Back in the building I didn't have to say a word.My mum knew just by looking at me.Her __18__ made her face softer.And I'm sure it was at least as big as the smile on my face.Her eyes, __19__, looked kind of tear.I knew she was __20__ for me.( )1. A. got ( )2. A. loud ( )3. A. unable ( )4. A. mention ( )5. A. house ( )6. A. set down ( )7. A. mum ( )8. A. succeeded ( )9. A. missing ( )10. A. work ( )11. A. enough ( )12. A. ability ( )13. A. belief ( )14. A. calm ( )15. A. badly ( )16. A. passed ( )17. A. practice ( )18. A. words ( )19. A. however ( )20. A. sad B. woke B. weak B. unhappy B. forget B. kitchen B. take down B. dad B. failed B. lost B. improve B. little B. performanceB. advantage B. anxious B. well B. went B. paperwork B. smile B. therefore B. happyC. turned C. noisy C. unwilling C. leave C. garage C. calm down C. instructor C. managed C. disappeared C. change C. more C. time C. anxiety C. excited C. unsuccessfully C. failed C. test C. look C. although C. nervous D. brought D. strong D. unavailable D. put D. bed D. put down D. teacher D. attempted D. gone D. get D. less D. turn D. comfort D. cautious D. hardly D. tried D. parking D. anger D. but D. sorry 查看答案
