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托福阅读推断题范例(4)

2015-07-31 16:13:46来源：网络

　　【托福阅读推断题范例(4)】托福阅读推断题本质是逻辑推理型事实信息题。新东方在线托福网为大家带来托福阅读推断题范例(4)，希望对大家托福备考有所帮助。更多精彩尽请关注新东方在线托福网!

　　查看全部：托福阅读推断题范例及答案

　　托福阅读推断题例题

　　例题4：

　　Paragraph 5: Even the kind of stability defined as simple lack of change is not always associated with maximum diversity. At least in temperate zones, maximum diversity is often found in mid-successional stages, not in the climax community. Once a redwood forest matures, for example, the kinds of species and the number of individuals growing on the forest floor are reduced. In general, diversity, by itself, does not ensure stability. Mathematical models of ecosystems likewise suggest that diversity does not guarantee ecosystem stability—just the opposite, in fact. A more complicated system is, in general, more likely than a simple system to break down. (A fifteen-speed racing bicycle is more likely to break down than a child’s tricycle.)

　　Which of the following can be inferred from paragraph 5 about redwood forests?

　　They become less stable as they mature.

　　They support many species when they reach climax.

　　They are found in temperate zones.

　　They have reduced diversity during mid-successional stages.

　　答案见下一页>>>>


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