完形填空。

　　Some countries have large numbers of earthquakes. 1 do not have many; for example, there are 2 earthquakes in Britain. There is often a great sound during an earthquake. The ground 3 and the houses fall down. Sometimes 4 of people are killed 5 different ways. Earthquakes may also happen 6 the sea, or near volcanoes, but this is not always 7 . The powerful forces inside the earth 8 rocks and great waves appear. They 9 long distances and are strong enough 10 down houses and other buildings. Sometimes they break 11 buildings than the earthquake itself. A 12 earthquake happened in Assam, India, in 1986. The 13 near Shillong suddenly moved 1.5 feet to one side and then back again. 14 continued to act like this 200 times a minute. Few buildings could stand when that was happening and the great stones 15 four feet up into the air. (153 words)