下列不是浆液性腺泡主要分泌的蛋白是（） A.富脯氨酸蛋白 B.糖蛋白 C.α-淀粉酶

阅读理解。

     Would you know what to do during a big earthquake (地震)? Scientists have some advice for us.

     If the ground begins shaking while you are driving, stop your car on the roadside and stay in it. If you are

in a tall building, don't use the lift and never jump out of the windows. When you are in a living room, find a

strong table or rush into a smaller room like washroom. Then lie down your body. Take care of your head.

When you are in a public place, like supermarket or cinema, don't crowd in jam (拥挤), or you may fall over

and get hurt. Cross your arms to protect yourself. You can also find a place to hide.

     After the main shake, quickly run out of the dangerous building for there will be small earthquakes. If you

are safe, remember not to engage the phone line, keep it free for rescue (援救) using. Don't go to the hospital

if you are not badly hurt, others will really need help. Take part in the rescue action if you can.

1. Who give readers the advice above?

A. Doctors.

B. Scientists.

C. Teachers.

D. Parents.

2. What should people do if they are driving when an earthquake happens?

A. Drive on quickly.

B. Take care of the car.

C. Stop the car on the roadside.

D. Jump out of the windows. 

3. Why does the writer say "Don't crowd in jam in public places"?

A. Because people can lie down easily.

B. Because people may get help quickly.

C. Because it can help avoid falling over.

D. Because it can help find a place to hide.

4. What does the underlined word "engage" in the last paragraph mean in Chinese?

A. 占用

B. 触摸

C. 接通

D. 修理

5. Which of the following is TRUE according to the last paragraph?

A. Try to help the others if you can.

B. Stay in the dangerous building after the main shake.

C. Go to a doctor even though you are not badly hurt.

D. Keep making phone calls to tell your family that you are safe.

按行政相对人是否特定为标准，可以分为( )。

A．抽象行政行为和具体行政行为

B．羁束行政行为和自由裁量行政行为

C．依职权行政行为和依申请行政行为

D．要式行政行为和非要式行政行为

下列卡环中用于前牙的是

A．正型卡环

B．联合卡环

C．小上返卡环

D．RPI卡环

E．RII卡环

总配线架的基本功能包括（）部分。

A、2

B、3

C、4

D、5

低碳产业的概念最早出现在（）

A.中国

B.美国

C.日本

D.英国