9. The club is open to all ________ (宗教) age, sex and race.

8. The ____________(合唱)produced by hundreds of males can be heard over a mile away.

7. Many children _________(要求) that they have pictures taken with the two astronauts.

6. Smoking is strongly _________(禁止) in senior schools in China.

5. The captain of the team was elected by the ______(选举) of the members.

4. You may have complete ________ (自由) of action in dealing with the matter.

3. We should treat others without ________ (偏见).

2. We hope they will unite to write a new ________ (篇、章)of peace and cooperation.

1. In 1849, Marx went to England and made London the base for his _________ (革命) work.

1．(本题10分)极坐标方程化为直角坐标方程是　　　　　　　　　　 。

2(本题10分)自极点O向直线作垂线，垂足是H)，则直线的极坐标方程为 　　　　　　　。

3(本题10分)设P(x，y)是曲线C：上任意一点，求的取值范围。

4(本题10分)已知矩阵，，，

若A = BC，求函数在[1,2] 上的最小值.