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  3. Earthquakes may rightly be ranked as one of the most devastating forces known to man: since records began to be written down, it

Earthquakes may rightly be ranked as one of the most devastating forces known to man: since records began to be written down, it

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问题     Earthquakes may rightly be ranked as one of the most devastating forces known to man: since records began to be written down, it has been【S1】______that earthquake-related fatalities (deaths) have numbered in the million, and that earthquake-related destruction has been【S2】______calculation. The greater part of such damage and loss of life has been due to collapse of buildings and the effects of rockslides, floods, tsunamis (海啸) and other phenomena【S3】______from earthquakes, rather than from the quakes themselves.
    The great majority of all earthquakes occur in two specific【S4】______areas. One such area encompasses (环绕) the Pacific Ocean and its contiguous (相邻的) land masses. The other extends from the East Indies to the Atlas Mountain, including the Himalayas, Iran, Turkey, and the Alpine regions. It is in these two great belts or zones that ninety percent of all earthquakes take place; they may,【S5】______, happen anywhere at any time.
    This element of the unknown has for centuries added greatly to the dread and horror surrounding earthquakes, but in recent times there have been indications that earthquake【S6】______maybe be possible. By analyzing changes in animal【S7】______, patterns of movements in the earth’s crust, variations in the force of gravity and the earth’s magnetic field, and the frequency with which minor earth tremors (small earthquakes) are observed, scientists have shown increasing success in anticipating when and where earthquakes will strike. As a result, a worldwide earthquake warning network is already in operation and has helped to prepare for (and thus lessen) the vast destruction that might【S8】______have been totally unexpected.
    It is【S9】______that man will ever be able to control earthquakes and eliminate their destructiveness altogether, but as【S10】______and why earthquakes happen become better understood, man will become more and more able to deal with their potential devastation (毁坏) before it occurs.

A. however         B. behavior        C. expectations        D. otherwise
E. beyond          F. how             G. geographic          H. whether
I. doubtful        J. certainly       K. resulting           L. above
M. prediction      N. supposed        O. estimated
【S2】
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