题目内容：

When some plates(版块) of the earth move suddenly, an earthquake happens. Many earthquakes begin under the sea. Earthquakes may happen anywhere on the earth. They often happen near the mountains.

During the earthquake, the shakings make rocks rise suddenly and even

crack(断裂)open. Houses fall, people are killed or hurt, and sometimes the whole villages or cities are destroyed.  Can we do something to keep ourselves safe from earthquakes? Scientists have studied earthquakes and make maps that show the “ earthquakes belts(带)” In areas in these belts, it’s possible for earthquakes to happen. In these areas we should build strong houses to fight against earthquakes.

In the future, scientists will be able to tell when and where an earthquake will before they happen. They can also tell people what to do and how to do it.

1.A large number of earthquakes often happen_________________.

A. in the area    B. on land

C. at night  D. next to mountains

2.The reason for an earthquake is ______________________.

A. the result of rock sudden movement

B. rocks’ cracking open

C. that there are so many plates on the earth.

D. that the sea is too deep.

3.A map showing the earthquake belts will tell people __________________.

A. what kind of houses to build

B. what kind of houses can stay up in an earthquake

C. where earthquakes may happen

D. how to keep themselves safe during the earthquake

4.In the future we’ll be no longer so afraid of earthquakes_____________.

A. with the help of scientists’ exact predication(预报).

B. because of a map showing the “earthquake belts”

C. because we can guess the date and place of earthquakes

D. as scientists know what to do and how to do it.