单元检测（十六） Sandstorms in Asia

　　Ⅰ.阅读理解

　　A

　　A sandstorm refers to a high amount of wind occurring in sandy areas, usually in deserts, where the wind speed is able to lift the top layer of sand from the ground, and push it in every direction. The sand involved in the sandstorm can reach heights of about 3.05m－15.24m.

　　It is very dangerous to experience a sandstorm. Sand can get into the nose, eyes, mouth and lungs. If you happen to be caught in a sandstorm, you must protect yourself by wearing masks, scarves and so on.

　　If you're driving when such a storm approaches, it's advised that you pull off the road, since it's difficult to continue driving. This is also important since vehicles can fail in during sandstorms and you could end up stuck on the road.

　　Most sandstorms occur in spring, and during the daytime. Many of the areas around the Persian Gulf and the Sahara Desert are associated with the most serious storms. Since it's a natural phenomenon, it can't be entirely controlled. In areas that are natural desert regions, you can't always prevent a sandstorm. There's much evidence that the planet Mars has dust storms, and clearly, no human intervention (介入) is responsible for such. Though_it_can_move_whole_sand_dunes_and_destroy_crops,_a_sandstorm_is_not_without_benefit.

　　语篇解读：本文介绍了沙尘暴常发生的时间、地点和基本状况以及如何在沙尘暴中自我保护的一些建议。

　　1．If you're driving in a sandstorm, you'd better ________.

　　A．stop your car in the middle of the road

　　B．continue to make your way

　　C．stop and ask for help

　　D．stop your car on the side of the road

　　解析：选D　细节理解题。根据第三段第一句中的"If you're driving when such a storm approaches, it's advised that you pull off the road ..."可知，如果你开车时遇到沙尘暴，你最好把车停在路边，pull off the road"把车停在路边"。故选D。

2．The underlined sentence shows that, anyway, sandstorms are ________.