24.When first in China, Prison Break made Chinese viewers crazy about it.
A.screening B.to screen C.screen D.screened
23.They are just college graduates and don’t realize ____ to start and run a company.
A. what takes it B. what they take C. what takes them D. what it takes
22._______ , I’ll wait for you to have dinner together. Be back as early as possible.
A. However late it is B. No matter how it is late
C. However it is late D. No matter how late is it
第一节:单项填空(共15小题,每小题1分,满分15分)
从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.If I drive in this city myself, I’ll probably get lost as I haven’t got very good sense of ________direction.
A.a; 不填 B.the; 不填 C.a; the D.the; a
20.解:(1)令,则,由点在的图象上可得, 故,
又是函数的图象上的点, 故.
(2)因为,所以 .
由对数函数的性质可得 , 解得 .
(3)因为 ,
所以.
当且仅当时,即时等号成立,
故在上的最大值为
19.解:因为是R上的奇函数,所以.
当时,,故有 .
所以
(2)因为是偶函数, 所以,
所以不等式.
又在区间[0,2]上单调递减,
所以 解得.
18.解 时 ,
时 ,
17.(本小题满分14分)
(Ⅰ)解:∵函数的图象过点,
∴.
∴. ①
又函数图象在点处的切线斜率为8,
∴ ,
又,
∴. ②
解由①②组成的方程组,可得.
(Ⅱ)由(Ⅰ)得,
令,可得; 令,可得.
∴函数的单调增区间为,减区间为.
16.解:
上的增函数,此时在上的最大值是
15、解:(1)由已知得A={1,2} B=
由,知
显见当B为单元素集合时,只需,此时B={1}满足题意。
当B为双元素集合时,只需,此时B={1,2}也满足题意
所以,,故的取值集合为
(2)由得
当C是空集时,
当C为单元素集合时,,此时C={}或C={}
不满足题意
当C为双元素集合时,C只能为{1,2},此时
综上的取值集合为