MotherNaturecanbefierceandsomeofthegreatestpowersheuses...

栏目: 练习题 / 发布于: / 人气:1.3W

问题详情：

Mother Nature can be fierce and some of the greatest power she uses comes in the form of sandstorms. They can be found across the globe and much like tornadoes (龙卷风), little is known about them. Sand and dust storms can be deadly with their suffocating winds full of sand.

A funny thing about sand and dust storms is that they hardly ever give any warning. They can be detected like a tornado but only after it has formed a dust whirl (回旋). On a radar screen, they appear to be any other mass of bad weather. However, they are much worse than a thunderstorm. Not only do sandstorms produce tornadoes called sand whirls, but they invade every corner they find. If you can get out of the path, do so.

How to survive a sandstorm when you cannot run away？Sandstorms come quickly, leaving valley like beaches in their way that can cover an entire house. If you have to stay where you are, get ready. Close all windows and doors and then cover them with plastic cloth or curtains which have to be nailed to the walls. That will help keep the millions of tiny bits from entering your throat and lungs. Cover all the holes that lead to the outside. A basement is not necessarily the best place, as the clouds of dust will sink through the floors. Cover your entire face and eyes if possible. Bandannas (头巾) will work in danger.

Hunker (蹲) down in a sealed area, box, container, or room that is in no danger of being ripped away by the fierce winds. If nothing else is available, lay yourself on plastic cloth or something made of an airtight material and then roll yourself up in it. The smallest crack will let in more sand and dust than your lungs can handle for any length of time and these forces of nature usually hang around for hours, covering everything.

Breathing through wet cloth, like in a fire situation, will also help once the clouds of dust are beginning to come in. The wet cloth stops the dust and provides moisture in a difficult situation.

8. The underlined word “suffocating” in Paragraph 1 probably means “________”.

A．letting out a strange noise

B．being frightening or dangerous

C．destroying everything on the way

D．causing difficulty in breathing

9. What do we know from the passage?

A．There are sandstorms only in deserts.

B．Sandstorms often arrive without any sign.

C．Sandstorms are quite different from tornadoes.

D．Thunderstorms are worse than sandstorms.

10. What is best for people to do if a sandstorm comes?

A．Get out of its way quickly.