锁骨内侧端与胸骨柄构成A．肩峰 B．喙突 C．肩关节 D．肩锁关节 E．胸锁关节

用所给词的适当形式填空。

1. Most people know Jackie Chan is a famous________.

2. What do you decide________ ( be) when you grow up?

3. My brother and I________ ( visit) my aunt near the sea in 1999.

4. March 8th is________ ( woman) Day.

5. At that time,we didn't have a car. We ________ ( travel)to Beijing by train.

6. They________ ( not use) computer or Internet at that time.

7. When they________ ( are) young,my parents didn't have bikes.

8. Please speak                       (loud).I can't hear you.

Prices of food and clothing and almost everything else in the country have steadily gone up. As a result, the buying ______ of the dollar has gone down.

A．capacity

B．competency

C．power

D．value

关于反思的方法，不正确的是（）。

公共广播功率放大器的功能基本分为（）。

A.对信号幅度的调整和处理

B.对信号强度的调整和处理

C.对频率强度的调整和处理

D.对信号分配

作物生产上通常用（）和（）来表示作物对光照强度的要求。