Earthquakes may happen anywhere on the earth. When some plates of the earth move suddenly, an earthquake happens. Many earthquakes begin under the sea. They often happen near the mountains, too.
    During an 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 “earthquake belts”. 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 be before they happen. They can also tell people what to do and how to do it.

51. The reason for an earthquake is           .

   A. that there are so many plates on the earth

   B. that the sea is too deep
   C. rocks’ cracking open

52. A lot of earthquakes often happens           .
   A. in the area     B. next to mountains     C. at night   

53. 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 earthquake may happen
54. Which is Not True according to the passage?

  A. During an earthquake people are killed or hurt.

B. The scientists can tell when and where an earthquake is now.

C. we should build strong houses to fight against earthquakes. 

55. In the future, we’ll be no longer so afraid of earthquakes          .
A. with the help of scientists’ exact prediction

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

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