第一节 单项填空

21 --What about going out this evening?

　 --Oh, I don’t know. I’ve got a bit of a headache. And _______,John’s coming to see me, so I ought to stay in.

A anyhow　　 B therefore　　 C however　　 D though

22 When you make a speech, you should try to get your idea_______.

A across　　　 B off　　　　　 C away　　　 D aside

23 The new film received ________from everyone.

A highly praise　　　 B high praise　　 C high praises　　 D highly praises

24 It was four o’clock in the afternoon_______ he and his grandpa reached the museum in Guanghan,________ an official warmly received them.

A that, where　　　　 B when, where　　 C where, when　 D that, which25

25 His efforts_______ when he was admitted to Qinghua University last summer.

A paid back　　　　 B paid for　　　 C paid out　　　　 D paid off

26 The taxi was so slow, we might just as well _______on the bus.

A go　　　　　　 B to go　　　　　 C have gone　　　 D having gone

27 Was it the building _______many reporters were interviewing the US official________ was attacked last week.

A that, who　　　 B when, who　　　 C where, that　　 D which, that

28 It is suggested that medicine should not be kept where it is _______ to children.

A acceptable　　　 B flexible　　　　 C separable　　　 D accessible

29 --Which is the computer you want_______?　

　 --The one on the right.

A to have repaired　　 B to have it repaired　　 C it repaired　　 D to repair it

30 A series of books _______translated into English.

A have been　　　　　 B has been　　　　 　　C have　　　　 D has

31 _______is no need _______ this to others. It is only between us.

A It, to tell　　 B It, telling　　 C There, to tell　　 D There, telling

32 My teacher often said in class, “One should love _______country.”

A one’s　　　　　　　 B their　　　　　　　 C its　　　 D her

33 The medical reform in that country turns out to be ______failure, but as we know, success often comes after ______ failure.

A a, the　　　　 B a, a　　　　 C /, /　　　 D a, /

34--Jack, let’s play cards for money, shall we?

　 --___________. You are always cheating.

A That’s great　　 B No way　　 C Let alone　　 D All above

35 --Thank you for your timely help.

　 --_____________.

A It’s my pleasure　　　　　　　　　　 B With pleasure　　

C It’s nice of you to say so　　 　　　　　D I don’t think so

22．(本小题满分14分)

已知函数在处取得极值.

(1)求函数的解析式；

(2)求证：对于区间上任意两个自变量的值，都有；

(3)若过点可作曲线的三条切线，求实数的取值范围．

21．(本小题满分12分)

如图，四棱锥中，底面是平行四边形，

平面，垂足为G，G在AD上，且

是的中点，四面体的体积为.

(1)求异面直线GE与PC所成的角；

(2)求点D到平面PBG的距离；

(3)若F点是PC上一点，且求的值.

20．(本小题满分12分)

一种信号灯，只有符号“√”和“×”随机地反复出现，每秒钟变化一次，每次变化只出现“√”和“×”两者之一，其中出现“√”的概率为，出现“×”的概率为，若第次出现“√”，记为，若第次出现“×”，则记为，令，

(1)求的概率；

(2)求，且的概率．

19.(本小题满分12分)

已知的展开式的系数和比的展开式的系数和大992,求的展开式中:(1)二项式系数最大的项;(2)系数的绝对值最大的项

18．(本小题满分12分)

　　 旅游公司为3个旅游团提供4条旅游线路，每个旅游团任选其中一条.

　 (1)求3个旅游团选择3条不同的线路的概率

　 (2)求恰有2条线路没有被选择的概率.

　 (3)求选择甲线路旅游团数至多1个的概率.

17．(本小题满分12分)

设集合A={0，2，4，6}，B={1，3，5，7}，从集合A、B中各取2个元素组成没有重复数字的四位数．

　 (1)可组成多少个这样的四位数？

　 (2)有多少个是2的倍数或者是5的倍数？

16．由等式

定义映射　　　　　　　 。

15．“渐升数”是指每个数字比其左边的数字大的正整数(如34689).若五位“渐升数”按从小到大的顺序排列，则第100个数为　　　　　 　.