25. It is still unclear ______ the little boy got the CD player to work.
A. where B. what C. that D. how
24. -Ring me at six tomorrow morning, will you?
-Why that early? I ______.
A. will be sleeping B. will sleep C. have slept D. have been sleeping
23. She tried two different methods, yet ______ of them seemed to work very well.
A. neither B. none C. each D. both
22. -What about ______ lecture you attended yesterday?
-To tell the truth, it was too boring. I can’t stand ______ lecture like that.
A. a; the B. the; a C. the; / D. the; the
第一节:单项填空(共20小题;每小题1.5分,共30分)
从每题所给的A、B、C、D四个选项中,选出可以填人空白处的最佳选项,并在答题卡上将该项涂黑。
21. He raised his voice, ______ we still couldn’t hear anything.
A. so B. or C. but D. as
14. 定义在上的偶函数满足,且在[-1,0]上是增函数,下面是关于的判断:
(1) 是周期函数;(2) 的图像关于直线对称;(3) 在[0,1]上时增函数;(4).其中正确命题的序号是 .(1)(2)(4)
北京市日坛中学2010-2011学年度第一学期
13. 椭圆的焦点为,点P在椭圆上,若,则 ;的大小为 2
12. 设函数,若,则的取值范围为 .
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