下列说法不正确的是（）。 A．温度升高，正逆反应速率都增大。 B．化学反应的速率

阅读理解。

     Miss Wang is going for a trip in some cities in the country. She wants to go to Beijing or Hangzhou by

plane. But she doesn't know what the weather will be like tomorrow (明天). Now she is watching the weather

forecast (预报) on TV.

     "Good evening! And here is the weather report for the next twenty-four hours. Most of north China will

have a cold day with a lot of snow. There will be a strong wind to the north of the Huaihai River. In the south

it will be fine during the day, but at night it will be rainy. The rain will be very heavy in some places. Beijing

will have snow. The temperature (温度) will be from 0℃ to 3℃.Hangzhou will be foggy (有雾的) with the

temperature from 6℃ to 14℃."

1. What is Miss Wang going to do?

A. She's going for a trip in the country.

B. She's going to give the weather forecast on TV.

C. She's going to watch the weather forecast on TV.

2. When is she watching the forecast?

A. In the morning.

B. At noon.

C. In the evening.

3. What's the temperature in Beijing tomorrow?

A. From 6℃ to 14℃.

B. From 0℃ to 3℃.

C. From 3℃ to 14℃.

4. Can Miss Wang go to Hangzhou by plane tomorrow according to (根据) the weather forecast?

    Why or why not?

A. Yes, because it will be a fine day tomorrow.

B. No, because it will be rainy there tomorrow.

C. No, because it will be foggy there tomorrow.

5. Which of the following is TRUE from the passage?

A. It will be rainy in Beijing tomorrow.

B. It will be fine at night in the south.

C. Beijing and Hangzhou don't have fine weather for trips tomorrow.

如图所示电路中，电源电动势E，内阻r。闭合开关S，当R₁的滑动触头向右移动时，电压表V₁的示数变化ΔU₁，电压表V₂的示数变化ΔU₂，ΔU₁、ΔU₂均为其变化的绝对值，则

A．ΔU₁=ΔU₂

B．ΔU₁<ΔU₂

C．ΔU₁>ΔU₂

D．不能判断ΔU₁、ΔU₂的大小关系

飞机保险中，保险人对施救费用的赔偿以保险金额的（）为限。

A.50％

B.100％

C.10％

D.20％

气流式粉碎机的粉碎原理为

A．不锈钢齿的撞击与研磨作用

B．旋锤高速转动的撞击作用

C．机械面的相互挤压作用

D．圆球的撞击与研磨作用

E．高压气流喷射使药物的颗粒之间以及颗粒与器壁之间的碰撞力