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  3. Nowadays groups of scientific workers, often supposed by their governments, spend their time studying the occurrence of earthqu

Nowadays groups of scientific workers, often supposed by their governments, spend their time studying the occurrence of earthqu

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问题     Nowadays groups of scientific workers, often supposed by their governments, spend their time studying  the occurrence of earthquakes. It is very likely that they will be able to【S1】______earthquakes or influence  the direction of their movements, which are determined by events far below the surface of the earth. But the facts they report and the theories suggested by those facts may enable scientists to【S2】______the centers of future earthquakes and even predict the time of their occurence. It is only when the【S3】______of events that we call an earthquake can be seen as a pattern that predictions can be made. Part of its pattern  is external and visible, or capable of being recorded by sensitive instruments above the earth’s surface.
    Scientists and engineers studied the shock waves of the San Francisco earthquake. Tile city was rebuilt  and new features were【S4】______to strengthen buildings and【S5】______a constant water supply in the event  of another earthquake. Large underground tanks were constructed to supply water if【S6】______supplies could not be tapped. Special【S7】______were taken to prevent fires, which often do more damage than earthquakes  themselves. The San Francisco earthquake【S8】______scientists with valuable information. Since the effects of the break were visible at the surface, scientists could【S9】______what actually happened, and reports of the incident were an important【S10】______to the world’s store of knowledge about earthquakes.

     A)prevent                                      I)warn
     B)formal                                       J)normal
     C)locate                                       K)measures
     D)sequence                                     L)introduced
     E)conpensated                                  M)consequence
     F)contribution                                 N)observe
     G)provided                                     O)recommended
     H)maintain  
【S8】
选项
答案G
解析 此处填动词且能和with 搭配。根据题意：旧金山地震给科学家______了宝贵的资料。可知provided 符合题意。
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