Some countries have a large number of earthquakes. Japan is one of them, while others do not have many, for example, there are few earthquakes in Britain. There is often a great noise during an earthquake.  The ground vibrates (颤动).Houses fall down. Railways are broken, which causes trains to turn over. Sometimes thousands of people are killed in different ways. About 60,000 were killed in 1783 in the south of Italy. Some people say that earthquakes often happen near volcanoes(火山), but it is not true. The centers of some earthquakes are under the sea. The bottom of the sea suddenly moves. The powerful forces inside the earth break the rocks. The coast is shaken and great waves appear. These waves travel long distances and rush over the land when they reach it, breaking down houses and other buildings. Sometimes they break more buildings than the earthquake itself.
A terrible earthquake happened in Assam, India, in 1986.The land near Shillong suddenly moved 1.5 feet to one side, and then back again. It continued to act like this 20 times a minute. Few buildings could stand what was happening and the great stones flew four feet up into the air. What kind of building stays up best in an earthquake? The Americans carefully studied the results of the earthquake at San Francisco(1906) and believed it best for buildings to be made with concrete(混凝土) walls together by steel frames. Such are the buildings that can't burn or fall easily.
Which of the following is NOT true?

A．Trains' turning over is directly caused by the earthquakes.

B．Some earthquakes have their centers under the sea.

C．It isn't certain that earthquakes happen near volcanoes.

D．Buildings with concrete walls are better against earth quakes.

Earthquakes often happen       .

A．near volcanoes	B．Both A and D
C．in Britain	D．in Japan

___________ make(s) more loss than the earthquake itself.

A．Nothing

B．Volcanoes

C．Forces inside the earth

D．Terrible waves by the earthquake

When an earthquake happens, ____________can be heard.

A．trains	B．thousands of people
C．a great noise	D．the powerful forces