根据句意及汉语提示完成句子。

1. In fact, most ______  (中等的) schools are in towns.

2. Tom is _____ (在场的),  he is not             (缺席).

3. I'll make a _____ (演讲) tomorrow.

4. The plane landed _____ (安全地) at the airport.

5. _____  (幸运地) the fire was discovered soon after it had started.

6.  Few teenagers in our city use _____ (毒品).

7. _____ (田径运动) include many kinds of sports.

8. She has joined the film _____ (社团).

人寿保险纯费率的计算依据是利率、（）。

A.保额损失率

B.死亡率

C.营业费率

D.附加费率