6.Where is the phone number?
A.On the woman’s desk.
B.On the man’s desk.
C.On Mr.Brown’s desk.
Conversation4
5.What is the man’s phone number?
A.733201. B.322301. C.633201.
4.Why does she want to go to hospital?
A.Because her daughter is ill.
B.Because she is ill.
C.Because her son is ill.
Conversation3
3.How long will it take the woman to get to the hospital if she takes a bus?
A.60minutes. B.45minutes. C.15minutes.
2.What time will they go to see the new movie?
A.On Sunday evening.
B.On Sunday afternoon.
C.On Sunday morning.
Conversation2
1.What will they do on Saturday night?
A.Have a picnic.
B.Dance in the home of Mark and Mary.
C.Have dinner with Mark and Mary.
22.(12分)在平面直角坐标系xOy中,已知圆的圆心为Q,过点且斜率为的直线与圆Q相交于不同的两点A、B.
(1)求的取值范围;
(2)是否存在常数,使得向量与共线?如果存在,求出的值;如果不存在,请说明理由。
21.(12分)已知直线
(1)求点关于直线的对称点的坐标;
(2)求直线关于直线的对称直线的方程。
20.(12分)已知圆圆
则为何值时,
2 圆与圆相切;
3 圆与圆内含。
19.(12分)
已知线段PQ的端点端点Q在圆上运动,求线段PQ的中点的轨迹方程。