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26. He didn’t put the things ______ they belonged, for ______ reason he got his punishment.

A. which; that     B. what; this      C. that; whose   D. where; which

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25. Under no circumstances, I was warned, _________ to give the password to someone else.

   A. could I        B. I could            C. I was         D. was I

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24. Almost everyone has his own strengths and weaknesses. It is ________ others are weak that maybe you have a great advantage.

    A. as               B. where               C. that             D. what

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23. Located ________ the eastern coast of China, the village is fairly new _______ only a small population of less than 3,000.学

A. off; with       B. on; with          C. in; of            D. on; in

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22. For sustainable development, the government has decided to give _______ to those energy-conserving and environment-friendly businesses in many aspects.

A. profit           B. interest             C. preference          D. advantage

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第一节:单项填空(共15小题)

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. We have every reason to believe that ______ 2010 World Expo in Shanghai will be ______ success.

A. /; a               B. the; /            C. the; a               D. a; a

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22.(本题满分14分)

已知数列,且

(1)求数列的通项公式;

(2)令,求数列项和的公式.

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21.(本题满分12分)

已知函数(为常数,且)有极大值9.

(1)求的值; 

(2)若斜率为的直线是曲线的切线,求此直线方程.

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20.(本题满分12分)

已知关于的二次函数

 (1)求证:对于任意,方程必有实数根;

 (2)若,求证:方程在区间上各有一个实数根.

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19.(本题满分12分)

(1)在等差数列中,,求及前项和

(2)在等比数列中,,求

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