分析 本文叙述了过去,人们不必担心保护环境的问题. 因为那时地球上人口稀少,自然资源似乎取之不尽.而现在世界变得拥挤异常.我们正在耗尽我们的自然资源,有毒化学制品的使用也正污染着环境.如果我们继续这样下去,地球上的生命将不复存在.
解答 64.No./No,it isn't.细节题.结合第二段The world has become too crowded.可知是说变的太拥挤了,也就是人口数量和以前不一样,故用否定回答,故答案是No./No,it isn't.
65.They are limited./Limited.细节题,结合第二段We are using up our natural resources too quickly.可知自然资源是有限的,故答案是They are limited./Limited.
66.Because people use bigger and more powerful machines to cut down more and more trees and they use modern fishing methods to catch more and more fish.细节题,结合第三段Yet with modern fishing methods,more and more fish are caught.We know that if too many trees are cut down,forests will disappear and nothing will grow on the land.Yet,we continue to use bigger and more powerful machines to cut down more and more trees.可知是因为人们用更大的更强大的机器去砍树,更先进的技术去抓更多的鱼,故答案是Because people use bigger and more powerful machines to cut down more and more trees and they use modern fishing methods to catch more and more fish.
67.We should eat more vegetables and less meat.推理题,结合第六段If we eat more vegetables and less meat,we will easily get more food.可知作者认为我们应该多吃蔬菜少吃肉,故答案是We should eat more vegetables and less meat.
68.We must use land to grow crops,protect the animals,use modern methods of birth control to control the population,educate people to think about the problems and take actions.推理题.结合最后四段We know,too,that if the population of the world continues to rise at the present rate,in a few years,there will not be enough food.If we eat more vegetables and less meat,we will easily get more food.Land that is used to grow crops can feed five times more people than land where animals are kept.The world population will not rise so quickly if people use modern methods of birth control.if we educate people to think about the problems,we shall have a better and cleaner living place in the future.可知我们必须种植庄稼,保护动物,控制人就,教育人民了解和采取行动,故答案是We must use land to grow crops,protect the animals,use modern methods of birth control to control the population,educate people to think about the problems and take actions.
点评 本题首先要通读全文,了解大意,紧紧抓住上下文语境所提供的信息,然后明确词意和词的搭配,并注意上下连贯,合乎逻辑,最后通读全文,细心检查.
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