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Can earthquake be predicted? Scientists are (1)_____ programs to predict where and when an earthquake will occur. They hope to (
Can earthquake be predicted? Scientists are (1)_____ programs to predict where and when an earthquake will occur. They hope to (
admin
2009-04-27
6
问题
Can earthquake be predicted? Scientists are (1)_____ programs to predict where and when an earthquake will occur. They hope to (2)_____ an early warning system that can be used to (3)_____ earth-quakes so that lives can be saved. The scientists who are (4)_____ this work is called seismologists. The word seismologist is (5)_____ from the Greek word seismos, meaning earthquake.
Earthquakes are the most dangerous and (6)_____ of all natural events. They occur in many parts of the world. Giant earthquakes have been (7)_____ in Iran, China, India, Alaska, and so on. Two of the biggest earthquakes that were ever recorded (8)_____ in China and Alaska, which measured about 8.5 on the Richter Scale. The Richter Scale was (9)_____ by Charles Richter in 1935, and compares the energy (10)_____ of earthquakes. An earthquake that measures a 2 on the scale can be felt but causes (11)_____ damage. One that measures 4.5 on the scale can cause slight damage, and an earth-quake that has a reading of over 7 can cause (12)_____ damage. It is important to note that a reading of 4 indicates a quake ten times as strong as one with a reading of 3. How do earthquakes occur? Earthquakes are caused by the shifting of rocks along cracks, or faults, in the earth’s crust. The (13)_____ is produced when rocks near each other are pulled (14)_____ different directions.
Earthquake (15)_____ is in its infancy. Scientists have only a (16)_____ understanding of the physical (17)_____ that cause earthquakes. Much more research has to be done. New and more up-to-date (18)_____ have to be found for collecting earthquake data and analyzing it. (19)_____, seismologists have had some success in predicting earthquakes. Several small earthquakes were predicted. While this is a small start, it is (20)_____ a beginning.
选项
A、level
B、grade
C、strength
D、standard
答案
A
解析
语义衔接题。本句中指出里克特的里氏震级是根据地震时所发出的能量强度制定的。level意为"程度、强度或浓度的相对高低",这里的energy level与上下文语境吻合。grade意为"级别,等级",句中的energy暗示了这里是按照其强度来确定震级,故排除grade;strength意为"力量",主要指身体、心理或道德方面的活力,这个词与energy词义相近,既然句中使用了 energy,显然再用strength不正确;standard意为"标准",文中并没有提到能量标准,故排除此项。
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0
考研英语一
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