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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

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5.What is the man’s phone number?

   A.733201.       B.322301.       C.633201.

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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

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3.How long will it take the woman to get to the hospital if she takes a bus?

   A.60minutes.      B.45minutes.      C.15minutes.

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2.What time will they go to see the new movie?

   A.On Sunday evening.

   B.On Sunday afternoon.

   C.On Sunday morning.

Conversation2

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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.

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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,使得向量共线?如果存在,求出的值;如果不存在,请说明理由。

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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。

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20.(12分)已知圆

为何值时,

2           圆与圆相切;

3           圆与圆内含。

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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。

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