2. 外语
  3. For thousands of years, the number of people in the world inched up. Then there was a【C1】______ spurt (爆发) during the industrial

For thousands of years, the number of people in the world inched up. Then there was a【C1】______ spurt (爆发) during the industrial

admin2012-11-30  50
问题      For thousands of years, the number of people in the world inched up. Then there was a【C1】______ spurt (爆发) during the industrial revolution which produced, between 1900 and 2000, a near-quadrupling of the world’s population.
     Numbers are still growing; but recently an inflection (变形) point seems to have been【C2】______ . The rate of population increase began to slow. Women【C3】______ having fewer children than the number required to keep populations stable. Last year the United Nations estimated the world’s average【C4】______ would fall below replacement by 2025. Demographers expect the global population to peak at around 10 billion by mid-century.
     As population predictions have changed in the past few years, so have attitudes. The【C5】______   about resource constraints that prevailed during the 1970s and 1980s, when the population was rising【C6】______ ,has given way to a new concern: the number of people in the world is likely to start【C7】______ .
    Some regard this as a cause for【C8】______ on the ground that there are obviously too many people on the planet. But there doesn’t seem to be much danger of a Malthusian catastrophe. Mankind appropriates about a quarter of the net primary production of the Earth-a lot, but hardly near the point of【C9】______ . Nor does the opposite problem-that the population will fall so fast that civilization is【C10】______ -seem a real danger. The projections suggest a flattening off and then a slight decline in the foreseeable future.
   A) falling                      F) decision                    K) panic
   B) exhaustion                   G) exceeding                   L) hard
   C) steeply                      H) different                   M) highly
   D) fertility                    I) threatened                  N ) celebration
   E) reached                      J) sudden                      O) started
【C1】
选项
答案J
解析 从语法结构看，该空应填入一个形容词修饰spurt，选项中符合这一要求的词有L)hard，J)sudden，H) different和K)panic。前一句提到上千年来世界人口一直保持着缓慢增长，空格所在句则提到，工业革命时期世界人口出现了一次……的爆发，以至于从1900年到2000年增长了近四倍，由此可知，人口数量经历了一次陡增的过程，因此sudden最符合语境。
转载请注明原文地址:https://kaotiyun.com/show/kfb7777K
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)