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  3. Fifty years from now the world’s population will be declining, with no end i

Fifty years from now the world’s population will be declining, with no end i

游客2023-07-24  14
问题     Fifty years from now the world’s population will be declining, with no end in【B1】______Unless people’s values change【B2】______several centuries from now there could be fewer people living in the entire world than live in the United States today. The big【B3】______of the past twenty years is that in not one country did fertility stop【B4】______when it reached the【B5】______rate--2.1 children per woman. In Italy, for example, the rate has fallen to 1.2. In Western Europe as a whole and in Japan it is down to 1.5.  The evidence now【B6】______that within fifty years or so world population will【B7】______at about eight billion before starting a【B8】______rapid decline.【B9】______.
    many people still fear that it will keep "exploding" until there are too many people for the earth to sup- port. But【B10】______World population was growing by two percent a year in the 1960s; the rate is now down to one percent a year, and【B11】______This view is coming to be widely accepted among population experts, even as the public  continues to focus on the threat of uncontrolled population growth. [br] 【B9】
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答案 Because in the past two centuries world population has increased from one billion to nearly six billion
解析 Because in the past two hundred years，population in this world has rapidly grown from one billion to nearly six billion
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