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EARTHQUAKES

An earthquake is a trembling of the earth’s surface and is caused by natural (1)______ within the earth itself. About a million earthquakes are (2)______________ each year, but the vast (3)_________ are small and cause little or no (4)__________ . (5)_______the energy of a large earthquake can be 10,000 times more powerful than that of the first atomic bomb. The terrible earthquake that (6)____________ the cities of Tokyo and Yokohama in Japan in 1923 caused an estimate of 142,807 deaths. Even (7)__________ disastrous was an earthquake in China when about 655,000 people died. Most earthquakes (8)__________under the ocean bed. Many of these are harmless, but sometimes tidal waves are set up on the (9)___________ . The waves are not high in the middle of the ocean, but they travel quickly, and may be huge as they rush up a shallow shore. Such devastating walls of water can (10)__________widespread destruction.

1. A. resourcesB. strength C. forces  D. powers
2. A. shownB. caught   C. studied       D. Recorded
3. A. areaB. majority      C. numberD. amount
4. A. hurtB. injuryC. damageD. pain
5. A. AlthoughB. YetC. ThereforeD. Similarly
6. A. destroyedB. coveredC. threatenedD. affected
7. A. moreB. ifC. thoughD. so
8. A. stayB. occurC. comeD. attack
9. A. groundB. airC. mountainD. surface
10. A. stopB. causeC. influenceD.change