0  268806  268814  268820  268824  268830  268832  268836  268842  268844  268850  268856  268860  268862  268866  268872  268874  268880  268884  268886  268890  268892  268896  268898  268900  268901  268902  268904  268905  268906  268908  268910  268914  268916  268920  268922  268926  268932  268934  268940  268944  268946  268950  268956  268962  268964  268970  268974  268976  268982  268986  268992  269000  447090 

24.The couple finally bought the house they wanted, for they     enough money.

    A.had saved       B.were saving     C.would save      D.were to save

试题详情

23.You look so tired. You     have stayed up late again.

    A.should         B.can           C.may           D.must

试题详情

22.- Has Tom already finished his new story?

    - I Have no idea. He     it last month.

    A.had written      B.was writing     C.would write     D.wrote

试题详情

第一节  单项填空(共15小题;每小题1分,共15分)

    从每题所给的A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

例:It’s so nice to hear from her again.     , we last met more than thirty years ago.

    A.What’s more     B.That’s to say     C.In other words   D.Believe it or not

    答案是D。

21.To write your report, you may refer to books 19th  century Englist literature.

    A.from          B.in             C.about          D.at

试题详情

22、如图,己知椭圆的离心率

,左、右焦点分别为,抛物线

的焦点恰好是该椭圆的一个顶点.

   (Ⅰ)求椭圆的方程;

   (Ⅱ)若斜率为的直线与轴、椭圆顺次交于

三点.求证

试题详情

21、设函数f(x)=ax3-2bx2+cx+4d(a、b、c、d∈R)的图象关于原点对称,且x=1时,f(x)取极小值-

(1)求a、b、c、d的值;

(2) 若x1,x2∈[-1,1]时,求证:|f(x1)-f(x2)|≤

(3)当x∈[-1,1]时,图象上是否存在两点,使得过此两点的切线互相垂直?试证明你的结论。

试题详情

20、设函数,若不等式的解集为

(1)求的值;(2)若函数上的值域为[1,4],求实数取值范围。

试题详情


同步练习册答案