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A population explosion will lead to______. ______, the world may have a population of 12 billion in a century.
A population explosion will lead to______. ______, the world may have a population of 12 billion in a century.
admin
2007-10-13
61
问题
A population explosion will lead to______.
______, the world may have a population of 12 billion in a century.
选项
A、If man can live longer in the future
B、If the science of medicine is developing fast enough
C、If the population growth is not reduced
D、If the earth is able to provide a good life for more people
答案
C
解析
答案依据最后一段倒数第二句:Unless population growth is...12 billion in a century."除非人口增长下降,否则世界人口将在一个世纪以内达到120亿"。unless=if…not,故C项正确。
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成人本科学位英语
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