题目内容：

Dust storms are violent and mostly unpredictable. They can cause property damage, injuries, and deaths, so it’s necessary to know what to do when you come across them.

     Watch out for dust storm warnings. Dust storms are most likely to occur on hot summer days, so listen to the local TV or radio broadcasts before traveling in hot, dry conditions, and consider changing or giving up your trip if dust storms are predicted. Roadside signs may also be able to warn you of dust storm danger.

     Be prepared. If you are in a storm-prone area, carry a mask(口罩) to keep out small dust particles (颗粒), and take eye protection to protect your eyes. A supply of water is also necessary.

     Go beyond the storm. If you see a dust storm from some distance, and you are in a vehicle, you should try to escape from it. Some dust storms can travel at more than 75 miles per hour, but they frequently travel much slower. However, it is not advisable to put yourself at risk by driving at high speed.

     Stay inside. Do not move about in a storm, as you will not be able to see hidden risks in your path. So if you’re in a house, stay inside.

     Protect yourself from flying objects. Cover as much of your body as possible. A dust storm’s high wind can carry heavy objects. If you find yourself without shelter, try to stay low, close to the ground, and protect your head with your arms, a backpack or a pillow.

1.What does the underlined sentence in Paragraph 4 mean?

A．Dust storms usually travel much slower than vehicles.               B．Don’t be so worried about dust storms in the distance.                    C．You shouldn’t drive at a risky speed to escape from dust storms.   D．Driving faster than the dust storm is the most important thing.

2.We can learn from the passage that __________

A．it is dangerous to travel on hot summer days   B．dust storms usually come from far away   C．people should stay indoors when a dust storm comes      D．small objects blown by a storm’s wind cannot harm people

3.Which of the following may NOT really be needed when you come across a storm?

A．A pair of glasses.    B．A blanket.         C．A bottle of milk.     D．A travel guide.

4.A weatherman may give you all of the following advice EXCEPT that "_____________".

A．do not enter a dust storm                 B．mind the warnings on the roadside signs   C．close all the doors and windows of your house           D．cover your body with as many things as possible

5.Which of the following is mentioned in the passage?

a. the violence of dust storms

b. the speed of dust storms

c. the worst dust storm ever

d. the likely time for dust storms

A．a. b. c            B．b. c. d            C．a. b. d            D．a. c. d