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【导读】2013年职称英语考试将于3月30日举行，为帮助考生有效复习职称英语卫生类考试，中大职称英语考试网整理了卫生类模拟套题，希望对您通过考试有所帮助！

第四部分：阅读理解(第31～45题，每题3分，共45分)

下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题，从4个选项中选择1个最佳答案涂在答题卡相应的位置上。

A Very Slow Ride

The surface of the earth may seem very stable to you. But you might be amazed if you knew some of the things that are going on under that surface.

The earth has an outer shell of rigid pieces called tectonic plates (地壳构造板块)。The plates include both ocean floor and dry land. Some have whole continents on top of them. The continents on top of the plates are just going along for a slow ride，moving only about four inches per year. But even this small movement causes three types of big interactions.

One type is ocean ridges. These ridges develop in places where two plates are moving away from each other. As the plates separate，hot magma(岩浆)flows up to fill the space. New crust(地壳)builds up on the plate boundaries and causes ocean ridges. These ridges form long mountain ranges，which only rise above the ocean surface in a few places.

Another type of reaction-trenches-occurs between two plates that are moving toward each other. As the plates meet，one bends downward and plunges undemeath the other .This forms deep ocean trenches. The Marianas Trench off Guam in the western Pacific Ocean has a depth of more than 36，000 feet. This is the lowest point on the ocean floor. If the leading edges of the two colliding plates carry continents，then the layers of rock in the overriding plate crumple(变皱)and fold. A plate that carried what is now lndia collided with the southern edge of the plate that carried Europe and most of Asia. This caused the Himalayas，the world's highest mountains.

The third reaction is transform faults(转换断层)。These faults occur where two plates that are traveling in opposite directions slide past each other. Severe earthquakes can occur. The San Andreas Fault in Califomia is a good example of this type of movement.

1.The word "stable"(paragraph 1)means

A. "a place for horses".

B. "calm and easygoing".

C. "steady or firm".

D. "a collection of animals".

2.To explain the effect of trenches，the writer gives the example of

A. the sea floor in the Atlantic Ocean.

B. the Himalayan Mountains.

C. Europe.

D. lndia.

3.The San Andreas Fault is an example of

A. a severe earthquake.

B. a California rock formation.

C. two plates moving apart.

D. two plates aliding past each other.

4.According to the passage，the earth is

A. always changing.

B. becoming smaller.

C. moving faster.

D. getting hotter.

5.This passage is mostly about

A. effects of movements of the earth's plates.

B. different types of continents.

C. the Marianas Trench.

D. transform faults.

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