1.选择题- (共7题)
1.已知圆C的圆心在坐标原点,且与直线l1:x﹣y﹣2 {#mathml#}{#/mathml#} =0相切
(Ⅰ)求直线l2:4x﹣3y+5=0被圆C所截得的弦AB的长.
(Ⅱ)过点G(1,3)作两条与圆C相切的直线,切点分别为M,N,求直线MN的方程
(Ⅲ) 若与直线l1垂直的直线l与圆C交于不同的两点P,Q,若∠POQ为钝角,求直线l纵截距的取值范围.
2.已知圆C的圆心在坐标原点,且与直线l1:x﹣y﹣2 {#mathml#}{#/mathml#} =0相切
(Ⅰ)求直线l2:4x﹣3y+5=0被圆C所截得的弦AB的长.
(Ⅱ)过点G(1,3)作两条与圆C相切的直线,切点分别为M,N,求直线MN的方程
(Ⅲ) 若与直线l1垂直的直线l与圆C交于不同的两点P,Q,若∠POQ为钝角,求直线l纵截距的取值范围.
3.已知圆C的圆心在坐标原点,且与直线l1:x﹣y﹣2 {#mathml#}{#/mathml#} =0相切
(Ⅰ)求直线l2:4x﹣3y+5=0被圆C所截得的弦AB的长.
(Ⅱ)过点G(1,3)作两条与圆C相切的直线,切点分别为M,N,求直线MN的方程
(Ⅲ) 若与直线l1垂直的直线l与圆C交于不同的两点P,Q,若∠POQ为钝角,求直线l纵截距的取值范围.
7.如图,在空间几何体A﹣BCDE中,底面BCDE是梯形,且CD∥BE,CD=2BE=4,∠CDE=60°,△ADE是边长为2的等边三角形,F为AC的中点.
(Ⅰ)求证:BF∥平面ADE;
(Ⅱ)若AC=4,求证:平面ADE⊥平面BCDE;
(Ⅲ)若AC=4,求几何体C﹣BDF的体积.
2.单项选择- (共8题)
8.
My mother was seriously ill last month. Luckily, she managed to _________.
A.look through | B.pull through | C.run away | D.get back |
9.
I don’t think it is difficult for a senior student to ________ the difference between “hurt” and “injure”.
A.separate | B.divide | C.choose | D.tell |
10.
We tried to find a seat on the bus, but they were all_________.
A.used up | B.kept away | C.taken up | D.given away |
11.
He accidentally _____ he had quarreled with his wife and that he hadn’t been home for a couple of weeks.
A.worked out | B.made sure | C.led to | D.let out |
12.
—How’s your new babysitter?
—We ______ ask for a better one. All of our kids love her so much.
—We ______ ask for a better one. All of our kids love her so much.
A.might | B.mustn’t | C.couldn’t | D.should |
13.
Many famous hospitals are competing _____ an excellent doctor, who came from the USA last week.
A.to | B.in | C.for | D.with |
14.
—Will it rain tomorrow?
—I _____.
—I _____.
A.think not so | B.don’t hope so | C.hope not | D.don’t think it |
试卷分析
-
【1】题量占比
选择题:(7道)
单项选择:(8道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:8
7星难题:0
8星难题:0
9星难题:0