题目内容
An earthquake is a shaking of the ground1.(cause) by the sudden breaking and shifting of large sections of Earth's rocky outer shell. Earthquakes are among the most2.(power) events on earth, and their results can be terrifying. Rock movements during an earthquake can make rivers 3.(change) their course. Earthquakes can cause great damage and loss of4.(live). Large earthquakes beneath the ocean can create a series 5.huge and destructive waves called tsunamis 6.flood coasts for many miles. Earthquakes almost never kill people 7.(direct). Instead, many deaths and injuries in earthquakes result from 8.(fall) objects and the collapse(倒塌)of buildings, bridges, and other structures. Fire caused from broken gas or power lines is another major danger during 9.quake. Spills(溢出)of 10.(harm) chemicals are also a concern during an earthquake.