24. Whatever she says, _________ is often the case, you shouldn’t take too seriously.
A. it B. what C. which D. as
23. I have been absent for nearly half a month. I can’t afford_________ week.
A. the other B. another C. other D. a more
22. You can’t get the car back by Friday. It’s right_________.
A. under construction B. beyond repair C. out of date D. on the check list
第一节 语法与词汇知识 (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。
例:Mr. Smith owns________ collection of coins than anyone else I have ever met.
A. larger B. a larger C. the larger D. large
答案是B
21. -It is wise of parents to teach their children how to behave in company.
-_________.
A. Most likely B. For sure C. Exactly not D. No problem
22. (本小题满分14分)已知函数,
(1)若函数在上是减函数,求实数的取值范围;
(2)令,是否存在实数,当(是自然常数)时,函数的最小值是3,若存在,求出的值;若不存在,说明理由.
山东省实验中学2007级第一次诊断性测试
21.(本小题满分12分)已知命题:在内,不等式恒成立;命题:函数是区间上的减函数. 若命题“”是真命题,求实数的取值范围.
20.(本小题满分12分)已知,
(1)求的值;
(2)求.
19.(本小题满分12分)已知函数图像上的点处的切线方程为,函数是奇函数.
(1)求函数的表达式;
(2)求函数的极值.
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