1.单选题- (共9题)
7.
圆心在x轴上,半径长为
,且过点(-2,1)的圆的方程为( )

A.(x+1)2+y2=2 |
B.x2+(y+2)2=2 |
C.(x+3)2+y2=2 |
D.(x+1)2+y2=2或(x+3)2+y2=2 |
2.选择题- (共4题)
11.
Tom looked at Jenny, with tears ________ his eyes, and shouted out the words ________ in his heart for years.
Tom looked at Jenny, with tears ________ his eyes, and shouted out the words ________ in his heart for years.
12.
Tom looked at Jenny, with tears ________ his eyes, and shouted out the words ________ in his heart for years.
Tom looked at Jenny, with tears ________ his eyes, and shouted out the words ________ in his heart for years.
13.
Tom looked at Jenny, with tears ________ his eyes, and shouted out the words ________ in his heart for years.
Tom looked at Jenny, with tears ________ his eyes, and shouted out the words ________ in his heart for years.
3.填空题- (共4题)
4.解答题- (共5题)
18.
正方形ABCD和正方形ABEF的边长都是1,并且平面ABCD⊥平面ABEF,点M在AC上移动,点N在BF上移动.若|CM|=|BN|=a(0<a<
).
(1)求MN的长度;
(2)当a为何值时,MN的长度最短.

(1)求MN的长度;
(2)当a为何值时,MN的长度最短.
19.
已知方程x2+y2-2x-4y+m=0.
(1)若此方程表示圆,求m的取值范围;
(2)若(1)中的圆与直线x+2y-4=0相交于M、N两点,且OM⊥ON(O为坐标原点),求m;
(3)在(2)的条件下,求以MN为直径的圆的方程.
(1)若此方程表示圆,求m的取值范围;
(2)若(1)中的圆与直线x+2y-4=0相交于M、N两点,且OM⊥ON(O为坐标原点),求m;
(3)在(2)的条件下,求以MN为直径的圆的方程.
试卷分析
-
【1】题量占比
单选题:(9道)
选择题:(4道)
填空题:(4道)
解答题:(5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:0
7星难题:0
8星难题:0
9星难题:18