职称英语A级单词_2018年职称英语卫生类A级概括大意强化模拟试题(4)
2 These are about a million quakes a year. Fortunately, however, not all of them are destructive. The intensity of an earthquake is measured on the Richter Scale, which goes from upward. The highest scale recorded to date is 8.9. major damage generally occurs from quakes ranging upward from 6.0.
3 The actual cause of the quake itself is the breaking of rocks at or below the earth"s surface. This is produced by pressure which scientists believe may be due to a number of reasons, two of which are the expansion and contraction of the earth"s crust and continental drift.
4 In order to limit the damage and to prevent some of the suffering resulting from earthquakes, scientists are working on ways to enable accurate prediction. Special instruments are used to help people record, for example, shaking of the earth. Scientists are trying to find methods that will enable them to indicate the exact time, location and size of an earthquake.
5 Certain phenomena have been observed which are believed to be the signs of imminent earthquakes. These include strange behaviors of some animals, the changes in the content of mineral water, etc. The magnetic properties of rocks may also display special pattern before earthquakes happen.
A. Earthquakes forecast
B. Historical records of earthquakes
C. Intensities of earthquakes
D. Cause of earthquakes
E. Indications of earthquakes
F. Damaging earthquakes
5. Not all damage during an earthquake is caused by____________.
6. Not all earthquakes are strong enough to cause ___________.
7. Scientists have been working hard to warn people of ____________.
8. Earthquakes can be predicted by observing ______________.
A. the quake itself
B. accurate prediction
C. damage of property and loss of lives
D. a possible earthquake
E. the unusual behaviors of some animals
F. the strong behaviors of human beings