Question

Why do earthquakes happen? Scientists explain that the outside of the earth is made of a number of different plates(极块). For example, at San Francisco the Pacific（太平洋的） Plate which is moving towards the northwest meets the North American Plate. The Pacific Plate is moving very  slowly-at 5. 3 centimetres a year. Sometimes these two plates stop and do not move for years. Then suddenly, they jump and an earthquake is felt. As the movement of these plates, West America near the sea has always been a bad place for earthquakes. When the 1906 earthquake happened, the Pacific Plate jumped 5-6 metres to the north.

We cannot stop earthquakes, but we can do things to make sure they don't destroy(毁坏) the whole of cities. First ,it is not a good idea to build houses along the lines, where two of the earth's plates join together. Second, if you think there may be an earthquake, it is better to build houses on rock not on sand. Third, you must make the houses as strong as possible. Weak buildings will fall down in an earthquake, but strong ones may stay up.

1. Scientists explain that _____.

A. the outside of the earth is made of a plate

B. the inside of the earth is made of different plates

C. the outside of the earth is made of lots of different plates

D. the earth is a plate

2. An earthquake can be felt ______

A. when two plates push each other

B. when one plate pulls another plate

C. when one plate jumps over another plate

D. when two plates don't move

3.An earthquake shook San Francisco in the past because _____.

A. San Francisco stands along between the Pacific Plate and the North American Plate

B. San Francisco stands near the Pacific

C. San Francisco is near the sea

D. the city of San Francisco wasn't built very well

4.We can't stop _____.

A. earthquakes from destroying the whole of cities

B. earthquakes

C. building houses along the earthquake line

D. building weak houses at San Francisco

5.We _____to make sure earthquakes don't destroy the whole of cities.

A. should build houses far from the earthquake line

B. should build houses on rock not on sand if we think there may be an earthquake

C. must make the houses as strong as possible

D. A, B and C

Answer

1.C

2.A

3.A

4.B

5.D

【解析】

试题分析：这篇短文中作者给我们讲述了地震是如何发生的，地球是由很多板块组成的，这些板块的移动就会导致地震的发生。我们阻止不了地震，但是我们可以做一些事情来降低地震带来的破坏，短文中作者给我们提出了一些建议。

1.C 细节理解题。根据短文的开头Scientists explain that the outside of the earth is made of a number of different plates可知，科学家们解释说地球外部有很多不同的极快构成，由此可知选C。

2.A 细节理解题。根据短文第一段中Sometimes these two plates stop and do not move for years. Then suddenly, they jump and an earthquake is felt.可知，有时候两个极快很长时间不移动，但是他们突然移动，这样就会感觉到地震。故选A。

3.A 推理判断题。根据短文的大意可知，地震的发生是因为地球板块的移动造成的，根据短文中For example, at San Francisco the Pacific（太平洋的） Plate which is moving towards the northwest meets the North American Plate可知，旧金山市位于太平洋板块和北美板块的交界，故选A。

4.B 细节理解题。根据短文第二段中We cannot stop earthquakes, but we can do things to make sure they don't destroy(毁坏) the whole of cities可知，我们阻止不了地震，但是我们可以做一些事情降低它给我们带来的破坏。故选B。

5.

考点：科普类短文阅读。