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第一節(jié) 單項(xiàng)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

試題詳情

22．(本小題滿(mǎn)分14分)

已知函數(shù)在處取得極值.

(1)求函數(shù)的解析式；

(2)求證：對(duì)于區(qū)間上任意兩個(gè)自變量的值，都有；

(3)若過(guò)點(diǎn)可作曲線的三條切線，求實(shí)數(shù)的取值范圍．

試題詳情

21．(本小題滿(mǎn)分12分)

如圖，四棱錐中，底面是平行四邊形，

平面，垂足為G，G在AD上，且

是的中點(diǎn)，四面體的體積為.

(1)求異面直線GE與PC所成的角；

(2)求點(diǎn)D到平面PBG的距離；

(3)若F點(diǎn)是PC上一點(diǎn)，且求的值.

試題詳情

20．(本小題滿(mǎn)分12分)

一種信號(hào)燈，只有符號(hào)“√”和“×”隨機(jī)地反復(fù)出現(xiàn)，每秒鐘變化一次，每次變化只出現(xiàn)“√”和“×”兩者之一，其中出現(xiàn)“√”的概率為，出現(xiàn)“×”的概率為，若第次出現(xiàn)“√”，記為，若第次出現(xiàn)“×”，則記為，令，