0  311677  311685  311691  311695  311701  311703  311707  311713  311715  311721  311727  311731  311733  311737  311743  311745  311751  311755  311757  311761  311763  311767  311769  311771  311772  311773  311775  311776  311777  311779  311781  311785  311787  311791  311793  311797  311803  311805  311811  311815  311817  311821  311827  311833  311835  311841  311845  311847  311853  311857  311863  311871  447090 

     求函数的极值和单调区间.

(18)(本小题满分10分)

设函数是定义在上的奇函数,当时,

(Ⅰ)当

(Ⅱ)若上为增函数,求的取值范围.

(19)(本小题满分10分)

    设函数,点P(x0y0)0<x0<1在曲线上,求曲线在点P处的切线与x轴和y轴的正向所围成的三角形面积表达式(用x0表达).

(20)(本小题满分12分)

        某厂生产某种电子元件,如果生产出一件正品,可获利200元,如果生产出一件次品则损失100元.已知该厂制造电子元件过程中,次品率p与日产量x的函数关系是:

(I)将该厂的日盈利额T(元)表示为日产量x(件)的函数;

    (II)为获得最大盈利,该厂的日产量应为多少件?

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(14)函数y=x-2sinx在(0, 2)内的单调增区间为            

(15)曲线y=上的点到直线2xy+3=0的最短距离为           

(16)向高为8m,底面边长为8m的倒置正四棱锥形的容器内注水,其速度为每分钟,则   当水深为5m时,水面上升的速度为      

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(1)已知的值是

   (A)       (B)2        (C)      (D)-2

(2)

   (A)0        (B)      (C)      (D)

(3)已知曲线,则过点(1,2)的切线的斜率是

   (A)2        (B)4        (C)6       (D)8

(4)函数的导数是

   (A)      (B)     (C)    (D)

(5)若函数 为R上的连续函数,则a 的值为

   (A)2        (B)1        (C)0       (D)-1

(6)下列给出的四个命题中,正确的命题是

①若函数

②若函数

③瞬时速度是动点位移函数S(t)对时间t的导数

④曲线在点(0,0)处没有切线

   (A)①②       (B)②③      (C)①②③     (D)②③④

(7)函数的导数是

   (A)         (B)

    (C)        (D)

(8)为增函数的区间是

   (A)          (B)

    (C)          (D)

(9)函数的最大值为

    (A)        (B)e       (C)       (D)10

(10)半径为r的圆形铁板,受热膨胀,半径r为时间t的函数,其导数(半径膨胀率)为那么其面积的膨胀率

    (A)        (B)      (C)      (D)

(11)若f(x)是在(-L,L)内的可导的偶函数,且不恒为0,则

(A)必定是(-L,L)内的偶函数    

(B)必定是(-L,L)内的奇函数

(C)必定是(-L,L)内的非奇非偶函数 

(D)可能是(-L,L)内的奇函数,可能是偶函

(12)已知的值是

    (A)       (B)0        (C)8        (D)不存在

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第三节 书面表达(满分25分)

不同的学生对自己心目中好老师的标准有所不同,但也有共同之处。请你根据下列表格中的内容以Good Teachers in Our Heart为题,写一篇120词左右的英语短文。

约40%的同学认为
约60%的同学认为
一致认为
对同学友好;上课认真
知识渊博;讲课清晰易懂
严格要求学生,又善于帮助学生解决问题;风趣幽默,上课生动有趣。

Good Teachers in Our Heart

Good teachers are those who are popular with students.But what kind of teachers are popular with students? Different students have different opinions about this question.                                    

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第二节 短文改错(共10小题;每小题1分,满分10分)

At present, playing computer games are becoming more and            81.___________

more popular with people, especially with students.Take Tom           82.___________

and Mike for example.Every day after the school, they go to the       83.___________

computer bar to play games till lately at night, and they often have         84.___________

a competition to see who wins many scores.Once, Tom didn’t go         85.___________

home until eleven o’clock in night.When he got home, he told his         86.___________

mother he had been gone over his lessons.Poor mom! She believed          87.___________

him and cooked two eggs for him.“Take more care of yourselves as        88.___________

you work too hardly, my dear son.” She said.Tom’s face turned red      89.___________

at his mother’s praise.Later he made his mind to work really hard.         90.___________

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第一节 单词拼写 根据句意及首字母或汉语意思提示完成句子。(答案写在答题卷的横线上)

71.She did all she could to ________ (获得) a good knowledge of English.

72.They could give ________ (证据) at the court yesterday.

73.The club c_________ of about 100 members.

74.He became ________(受鼓舞的) when he thought about helping the poor people.

75.Hello.This is Helen, I’d like to make an a_________ with Doctor White.

76.He is a selfish person.He only thinks of his own c_________.

77.I can’t c_________ on my studies with all that noise going on.

78.He suffered many i_________ in the accident.

79.Many people b___________ to death for our happy life today.

80.I am sorry I hurt you, but that was not my i ___________.

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