【托福阅读题型：Plant Colonization句子简化题】托福阅读中句子简化题是重要题型之一。根据托福阅读题型不同来进行专项练习，是短期提高托福阅读能力的有效方法。同学们需要多加练习哦!

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　　托福阅读句子简化题：Plant Colonization

　　【Paragraph 2】Both the rate of invasion and the rate of extinction vary greatly among different plant　species. Pioneer species – those that occur only in the earliest stages of colonization - tend to have high rates ofinvasion because they produce very large numbers of reproductive propagules (seeds, spores, and so on) and because　they have an efficient means of dispersal (normally, win○(Plant Colonization)

　　Which of the sentences below best expresses the essential information in the highlighted sentence in the　passage? Incorrect choices change the meaning in important ways or leave out essential information.

　　○ The seeds of pioneer species are usually carried by the wind to fertile sites, where they reproduce very　efficiently.

　　○ Pioneer species are successful invaders because they produce lots of seeds that are dispersed effectively.

　　○ Pioneer species produce their largest numbers of propagules during the earliest stages of their colonization.

　　○ Pioneer species reproduce very quickly and efficiently because they produce very large number of seeds.

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