4.-Where does your little daughter want to go during her holiday ?
-She is always looking forward to _____ to the Wu Yi Mountain.
A. take B. taking C. being taken D. b taken
3.I’m preparing the report for tomorrow’s meeting. Would you please _____ the radio a little?
A. turn on B. turn off C. turn up D. turn down
2.Great changes ______ in China in the past 20 years.
A. took place B. have taken place
C. were taken place D. have been taken place
第一节 单项填空(共20小题;每小题1分,满分20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。
1.--- What can I do for?
--- I’d like to buy a gift for my sister’s birthday, one at a proper price but of _____ great use and it’d better be ______ surprise.
A. /; a B. the; a C. a; / D. /; the
22.(本题满分12分)
数列中,,,且满足,
(1)求数列的通项公式;
(2)设(),()是否存在最大的整数,使得对任意成立,若存在,求出的值,若不存在,说明理由.
河北省正定中学2010高一第二学期第一次考试
21.(本题满分12分)
数列的前项和,数列满足:,, .
(1)证明数列为等比数列;
(2)求数列的前项和.
20. (本题满分12分)
张先生欲从银行贷款,购买一套自己满意的住房,按规定,政策性住房贷款的年息为9%,最长年限为10年,可以分期付款,张先生根据自己的实际情况估计每年最多可偿还5000元,打算平均10年还清,如果银行贷款按复利计算,那么张先生最大限额的贷款是多少元?()
19.(本题满分12分)
已知数列满足,()
(1)求的通项公式.
(2)求数列前项和.
18.(本小题满分12)
在中,的对边分别为,且满足
(1)求;
(2)若的面积为,求的周长。
17.(本题满分10分)
成等差数列的三个数的和等于18,并且这三个数分别加上1,3,17后就成了等比数列,求这三个数.
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