2. 外语
  3. In the past hundred years a million people have died in earthquakes, another million have been killed by【B1】______ and tornadoes

In the past hundred years a million people have died in earthquakes, another million have been killed by【B1】______ and tornadoes

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问题      In the past hundred years a million people have died in earthquakes, another million have been killed by【B1】______ and tornadoes and 9 million have lost their lives in floods. In addition to this many millions more have died as a result of famine and disease. We should also not forget in many of the world’s countries【B2】______ , chronic water shortage, is a fact of life, especially in the African Sahel region【B3】______ the Sahara desert.
     Scientists and engineers around the world have made great advances in earthquake engineering. It is, of course,【B4】______ physically to move cities such as Tokyo and San Francisco that have been built in earthquake【B5】______ . But most often it is not the earthquake that【B6】______ people, it is the【B7】______ buildings, bridges and other structures that cause deaths, and the【B8】______ of that happening can be greatly reduced by better building programs.
     【B9】______ .【B10】______ we have catapulted (弹射) hundreds of species of plants and animals into extinction, at the same time possibly wrecking our own long-term prospects for survival.【B11】______ .
【B7】
选项
答案collapsing
解析 空前的定冠词the和空后的名词building提示所填词为形容词或作定语的分词。联系上下文的 earthquake和buildings，bridges等根据常识可以猜测所填词表示“倒塌”的含义。collapsing意为“倒塌，崩溃”。
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