河北衡水高三调研卷(衡水中学高三调研试卷语文)

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2013-2014年河北衡水中学同步原创月考卷高三三调 理科数学

河北省衡水中学2014届高三上学期三调考试

数学理科试卷

一、 选择题       BBDC     DBBC        ACAA

二、 填空题 13、1     14、       15、       16、

三、解答题

17. (1)根据题意,由于在三棱柱中,侧面为矩形,,为的中点,与交于点,侧面,那么在底面Z中,利用相似三角形可知,,,进而得到,则可知;……………………6分

(2)如果,那么利用,为的中点,勾股定理可知,根据柱体的高,以及底面积可知三棱柱的体积为……………………12分

18. 解:(1)由题意得f′(x)=﹣3x2+m,

∵f(x)=﹣x3+mx在(0,1)上是增函数,∴f′(x)=﹣3x2+m≥0在(0,1)上恒成立,

即m≥3x2,得m≥3,-----------------------------2分

故所求的集合A为[3,+∞);所以m=3,∴f′(x)=﹣3x2+3,

∵,an>0,∴=3an,即=3,

∴数列{an}是以3为首项和公比的等比数列,故an=3n; -------------------------------6分

(2)由(1)得,bn=nan=n#8226;3n,

∴Sn=1#8226;3+2#8226;32+3#8226;33+…+n#8226;3n        ①

3Sn=1#8226;32+2#8226;33+3#8226;34+…+n#8226;3n+1      ②

①﹣②得,﹣2Sn=3+32+33+…+3n﹣n#8226;3n+1=﹣n#8226;3n+1

化简得,Sn=>.----------------------------12分

10分

为1000万元.                        --------------------12分

20. 解(Ⅰ)、、成等差,且公差为2,

、. 又,,

,        ,

恒等变形得 ,解得或.又,.        …………6分

(Ⅱ)在中,, ,,.

的周长

,………10分

又,,

当即时,取得最大值.  ……………………12分

21. 解:(Ⅰ)f#162;(x)=x(2-ax ),x>0.

若a≤0,f#162;(x)>0,f(x)在(0,+∞)上递增;

若a>0,当x∈(0,a( 2 ))时,f#162;(x)>0,f(x)单调递增;

当x∈(a( 2 ),+∞)时,f#162;(x)<0,f(x)单调递减.…5分

(Ⅱ)由(Ⅰ)知,若a≤0,f(x)在(0,+∞)上递增,

又f(1)=0,故f(x)≤0不恒成立.

若a>2,当x∈(a( 2 ),1)时,f(x)递减,f(x)>f(1)=0,不合题意.

若0<a<2,当x∈(1,a( 2 ))时,f(x)递增,f(x)>f(1)=0,不合题意.

若a=2,f(x)在(0,1)上递增,在(1,+∞)上递减,

f(x)≤f(1)=0,合题意.

故a=2,且lnx≤x-1(当且仅当x=1时取“=”).…8分

当0<x1<x2时,f(x2)-f(x1)=2lnx1(x2)-2(x2-x1)+2

<2(x1(x2)-1)-2(x2-x1)+2

=2(x1(1)-1)(x2-x1),

所以x2-x1(x1)<2(x1(1)-1).…12分

22. (1)证明:因MD与圆O相交于点T,由切割线定

理,,得

,设半径OB=,因BD=OB,且BC=OC=,

则,,

所以------------------5分

(2)由(1)可知,,且,

故∽,所以;

根据圆周角定理得,,则  --------10分

23.解: (1)由题.

因此只须解不等式.      …………………………………………2分

当时,原不式等价于,即.

当时,原不式等价于,即.

当时,原不式等价于,即.

综上,原不等式的解集为.   …………………………………………5分

(2)由题.

当>0时,

.   …………………………10分

衡水中学2011—2012学年度高三上学期一调考试(生物)选择题第40解析

这个题选B,因为抑制剂的作用是阻止酶与底物的结合,而不是使底物与酶分离。由图可以看出第二个是抑制剂与酶结合,底物无法再与酶结合。从而阻止了酶与底物相互作用

02~03年河北衡水中学同步原创月考卷高三一调英语的答案

听力1-5 ACCCB 6-10 BACAB 11-15 CCACB 16-20 ACABC 单选21.DBCCA 26.BBACB 31.ABBCA 完型填空 36-40CADAA 41-45DCBBC 46-50CDABB 51-55DCACB 阅读56-59ACBC 60-63 BACD 64-67.BBDA 68-70.ACD 【解题导语】本文告诉我们一些日常生活减压的技巧。 71【答案】G【解析】本文是总分结构后文是各种减压方法所以选G。 72【答案】D【解析】本段的Running, walking, playing tennis…都是体育锻炼。 73【答案】B【解析】本段的中心话题是照顾好自己所以吃好睡好是照顾好自己的表现。 74【答案】E【解析】本段围绕的话题是留给自己一些时间所以休息是最符合这一主题的。 75【答案】C【解析】这里的there’s so much to do, and not enough time及make a list of everything you have to do暗示了答案。 单词拼写1.circumstances 2. strengthened 3. unconscious 4. promote 5.agriculture 6.majority 7. chatting 8.aboard 9. sufferings 10. sacrifices 短文改错 In recent years many flowers shops have been appeared in our small town. It is common for people flower to buy flowers when they go to a gathering, visiting a sick friend, or attend a wedding or birthday vistit party. I still remember clear one day last year when Tom, a disabled student, presented some clearly flowers to his mother to express his gratitude for her. He owing his entire life to his mother’s kind to owed kindness and care. With her he would not have had the confidence or the courage to fight his disability. Without As a result∧ the great effort he has made, he was finally admitted to a key university. Of had 书面表达: Welcome to the column “English Writing” ! Recently the school website has set up a new column called “English Writing” which provides students with the chances to post their composition and communicate with each other. Not only can students improve their writing ability in this way, but they can strengthen their self-confidence. The column has lots of advantages. It is the teacher’s guide online that has an advantage over the other columns. If necessary, the students can have a direct “ask and answer” with professional teachers. It is required that the composition should be related to the students’ life. What’s more, if it is organized well enough, the writer will be rewarded for it. Hoping to the students’ participation.

2019-2020学年河北省衡水中学高三上学期五调考试地理试卷(含答案)

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2017—2018学年度河北省衡水中学上学期高三年级十模考试(文科)数学试卷(附答案)

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