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托福阅读句子简化题：The Cambrian　Explosion

2015-08-13 15:49:08来源：网络

　　【托福阅读题型：The Cambrian　Explosion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!

　　查看全部：托福阅读题型分类练习之句子简化题

　　托福阅读句子简化题：The Cambrian　Explosion

　　【Paragraph 5】A slightly younger fossil formation containing animal remains is the Tommotian formation, named　　after a locale in Russia. It dates to the very early Cambrian period, and it also contains only soft-bodied forms. At one　time, the animals present in these fossil beds were assigned to various modern animal groups, but most paleontologists　now agree that all Tommotian fossils represent unique body forms that arose in the early Cambrian period and　disappeared before the end of the period, leaving no descendants in modern animal groups.(The Cambrian　Explosion)

　　! 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 animals found in the Tommotian fossil bed were once thought to belong to a variety of modern animal　groups, but now they are thought to have descended from a single group.

　　○ Animals in the Tommotian fossil beds were initially assigned to modern animal groups but are now thought to　belong to groups that emerged and died out during the Cambrian period.

　　○ Though at first they thought otherwise, paleontologists now agree that the animals in the Tommotian have body　forms from which modern animals have descended.

　　○ It is unclear whether the Tommotian fossils from the early Cambrian period represent unique body forms or　whether they should be assigned to various modern animal groups.

本文关键字: 托福阅读题型 托福阅读训练 句子简化题

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