25. I attended his lecture, most of ________ he said had nothing to do with my subject, though..
A. which B. what C. that D. all
24. The little girl cried out loud__________ the terrible sight caused by the landslides.
A. by B. on C. over D. at
23. If only I ________in space in a manned spaceship some day like Yang Li-wei!
A. shall be able to fly B. could fly
C. can fly D. should have flown
22. It was half past eleven ________she came back last night, which made her mother angry____.
A. when B. that C. while D. since
从每题所给的A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21. I’m sorry to have forgot to pay back the money you lent me a month ago-________.
A. No hurry B. Forget it C. That's right D. Take it easy
22. (本小题满分14分)已知双曲线C的中心在原点,抛物线y2=2x的焦点是双曲线C的一个焦点,且双曲线过点(1,),
(1)求双曲线的方程;
(2)设直线l:y=kx+1与双曲线C交于A、B两点,试问:①k为何值时⊥;
②是否存在实数k,使A、B两点关于直线y=mx对称(m为常数),若存在,求出k的值;若不存在,请说明理由.
长泰一中2009-2010学年第一学期期中考试
21.(本小题满分12分)以数列的任意相邻两项为坐标的点均在一次函数的图象上,数列满足条件:,
⑴求证:数列是等比数列;
⑵设数列、的前项和分别为、,若,,求的值.
20.(本小题满分12分)已知实数,函数.
(1) 若,求函数的图像在点(-1,4)处的切线方程;
(2)求函数的单调区间;
(3) 若有极大值2求实数的值.
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