日日人人_亚洲美女在线视频_av手机在线播放_国产大片aaa_欧美中文日韩_午夜理伦三级

 0  436372  436380  436386  436390  436396  436398  436402  436408  436410  436416  436422  436426  436428  436432  436438  436440  436446  436450  436452  436456  436458  436462  436464  436466  436467  436468  436470  436471  436472  436474  436476  436480  436482  436486  436488  436492  436498  436500  436506  436510  436512  436516  436522  436528  436530  436536  436540  436542  436548  436552  436558  436566  447090 

第一節  單項填空(共15 小題, 每小題1分, 滿分15分)

21 He spends all his spare time on physics , and he __________ the subject.

  A .is crazy of     B .is crazy about      C.is concerned about         D.is concerned for

22 Although I often send e-mails to Tom , I have never seen him  _________ .

  A.face to face    B.on purpose       C.at the moment       D.hand in hand

23 She was angry at first but we managed to ________ her ________  .

  A.calm ; down       B.add ;up      C.try ; out          D.throw ; away

24 -- You went to the US last month, didn’t you?

  -- Yes .That was he first time that I  _________ there .

A.had been        B.had gone         C.went         D.have  been

25 --My sister is very upset today .

  --It’s your fault. . You ___________the bad news to her yesterday.

  A.should tell       B.should have told         C. shouldn’t have told          D.must tell

26 In the office I smiled at her but she just _________ me .

  A.cheated            B.ignored          C.trusted       D.forgot

27 It was because of bad weather _________ the football match had to be put off.

  A .so          B.so that        C.why           D.that

28 Li Min’s parents thought he was at school , but  ______he was in a cinema seeing a new film .

  A.actually         B.of course        C.however            D.surely

29 As my teacher hadn’t changed a lot , I _________  him at once.

A.realized      B.knew           C.remembered        D.recognized

30 Most Irish people go to __________ church on Sundays and ________ church plays an important ________ in people ‘s lives.

  A.the ; the ; part      B. / ; the ; role        C. / ; / ;part     D. the ; / ; role

31 We ‘re going to do some shopping . Will you _________ us?

  A.take part in         B.join in        C.join         D.take

32 --I missed the first part of the film . It was really a pity .

  --You  _________ home half an hour earlier .

  A.should have left         B.must have left  C.should leave  D.must leave

33 The nurse told the children that the sun  _________in the east .

  A .risen           B .rose             C. rises        D .rising

34 People in Britain speak the same language  __________ Americans do.

  A .which           B .what             C .like          D. as

35 I don’t like  __________ you speak to her..

  A .the way       B .the way in that      C. the way which   D.the way of which 

試題詳情

22、(14分)已知函數f(x)=x3+3ax-1,aR

(1)若函數y=f(x)的圖象在x=1處的切線與直線y=6x+6平行,求實數a的值。

(2)設函數g(x)=f/(x)-6,對滿足-1≤a≤1的一切a的值,都有g(x) <0恒成立,求實數x的取值范圍。

(3)當a≤0時,請問:是否在整數a的值,使方程f(x)=15有且只有一個實根?若存在,求出整數a的值,否則,說明理由。

考試座位號
成  績
 
 

試題詳情

21、(12分)某化工廠引進一條選進生產線生產某化工產品,其生產的總成本y(萬元)與年產量x(噸)之間的函數關系式可以近似地表示為y=-48x+8000,已知此生產線產量最大為210噸。

(1)求年產量為多少時,生產每噸產品的平均成本最低,并求最低成本。

(2)若每噸產品平均出廠價為40萬元,那么當年產量為多少噸時,可以獲得最大利潤?最大利潤是多少?

試題詳情

20、(12分)在銳角△ABC中,a,b.c分別為角A,B,C所對的邊且a=2csinA

(1)確定角C的大小

(2)若c=且△ABC的面積為,求a+b的值

試題詳情


同步練習冊答案
主站蜘蛛池模板: 久久久婷婷 | av不卡在线看 | 99涩涩 | 91久久精品一区二区别 | 五月激情六月婷婷 | 欧美色图亚洲自拍 | 干干干日日日 | 国产精品久久久久久久久久 | 国产精品久久久久久久久久 | 亚洲精品久久久狠狠狠爱 | 欧美日韩成人在线视频 | 国产精品久久久一区二区 | 日韩欧美在线视频播放 | 亚洲天天| 日韩亚洲欧美在线观看 | 欧美精品xxx | 91视频观看| 精品国产高清一区二区三区 | 在线观看黄av | 国产一区二区三区网站 | 久久九九精品久久 | 国产精品久久久久久福利一牛影视 | 欧美日韩在线观看视频网站 | 国产综合精品 | 久久九 | 国产精品一区二区久久久久 | 久久精品无码一区二区日韩av | 日本一区二区精品 | 欧美性猛交xxxx免费看漫画 | 一级看片| 中文字幕在线观看 | 日本在线免费看 | 中文视频一区 | 国产成人精品视频 | 欧美视频精品在线观看 | 精品国产一区二区三区四区 | 日韩成人av在线 | 日本在线免费电影 | 亚洲视频777 | 韩国精品 | www.久草.com |