Dust storms （沙尘暴） appear when strong wind blows and dirt from a dry surface． Strong dust storms may cause deaths， so you should know how to protect yourself from dust storms．

    Be careful of dust storm warnings

    Dust storms very probably happen on hot summer days， and it's not safe for people to travel during this period． So you should listen to the local TV or radio before travelling， and consider changing or giving up your trip if dust storms are predicated． （预测）

    Be prepared

    If you are in a place where storms happen often， carry a mask （面具） to keep dust and dirt away from your face， and a pair of glasses to protect your eyes．

    Stay inside

    Do not move around when a dust storm comes， as you will not be able to see hidden （隐藏的） dangers． So if you're in a house， don't go out and just stay inside．

    Protect yourself from flying objects

    Cover your body as much as possible in a dust storm． A strong wind of dust storms can carry heavy objects， so you should try to stay low， and close to the ground， and protect your head with your arms or a backpack．

（1）What should you do before you travel according to the passage？　　

A． Pack your backpack．

B． Bring some money with you．

C． Listen to the local TV or radio．

（2）We can learn from the passage that　　．

A． it is Safe to travel on hot summer days

B． people should stay inside when a dust storm comes

C． a strong wind of dust storms can 't carry heavy objects

（3）Which of the following may NOT be needed when you meet a dust storm？　　

A． A knife．

B． A mask．

C． A pair of glasses．

（4）The underlined word "dirt" mentioned in the first paragraph means　　．

A．烂泥

B．尘土

C． 丑闻

（5）What is the main idea of this passage？　　

A． How to predict dust storms．

B． How to reduce（减少）dust storms．

C． How to protect yourself from dust storms．