7. -Do you know the tall man ______ to Mr. King over there?
-Sorry, I don’t know him.
A. to speak B. speaking C. is speaking D. has spoken
6. Can you ______ your sister from that group of girls?
A. bring out B. pick up C. pick out D. bring up
5. Because of her fear of flying, Alice would rather take a long train journey ______ travel by air.
A. as B. to C. than D. while
4. The singer and the dancer ______ come to the meeting.
A. has B. have C. are D. is
3. We are ________ to say that the songs we heard last night were most .
A. inspired; inspired B. inspiring; inspired
C. inspired; inspiring D. inspiring; inspired
2. Going on a trip into ________ space must be quite ________ exciting experience.
A. /; the B. the; the C. the; an D. /;an
第一节 单项填空(共20小题;每小题1分,满分20分)
1. - Would you mind my using your telephone?
-________
A. Yes, go ahead B. Of course not, go ahead
C. Of course, help yourself D. No, you can’t
21.(本小题满分14分)已知圆C:
,
(1)求出此圆圆心C的坐标和半径r;
(2)求直线y=x被圆C所截得的弦长.
附加题(满分15分)
已知函数
,
(1) 求函数的定义域及值域;
(2) 判断该函数的奇偶性,并证明你的结论.
20.(本小题满分14分)已知x,y之间的一组数据如下表:
|
x |
1 |
3 |
6 |
7 |
8 |
|
y |
1 |
2 |
3 |
4 |
5 |
(1)以x为横坐标,y为纵坐标在直角坐标系中画出散点图,并说明这两个变量之间的关系是正相关关系还是负相关关系。
(2)求线性回归方程.
19.(本小题满分14分)为了检测某条生产线上产品的尺寸。现从该条生产线上每隔一定时间取一件产品,共取了50件,测得其产品尺寸后,画得其频率分布直方图如下。
|
(1)分别求尺寸在[10,15)和[20,25)内产品的频率。
(2)求尺寸在
内产品的个数.
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