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托福阅读作者目的题练习(4)

2015-08-07 16:04:36来源：网络

　　【托福阅读作者目的题练习(4)】本文中托福阅读题型作者目的题范例及材料由新东方在线名师提供。新东方在线托福网为大家带来托福阅读作者目的题练习(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：托福阅读不同题型练习汇总

　　例一：If true, though, why did cold-blooded animals such as snakes, lizards, turtles, and　crocodiles survive the freezing winters and torrid summers? These animals are at the　mercy of the climate to maintain a livable body temperature. It’s hard to understand why　they would not be affected, whereas dinosaurs were left too crippled to cope, especially if,　as some scientists believe, dinosaurs were warm-blooded. Critics also point out that the　shallow seaways had retreated from and advanced on the continents numerous times　during the Mesozoic, so why did the dinosaurs survive the climatic changes associated　with the earlier fluctuations but not with this one? Although initially appealing, the　hypothesis of a simple climatic change related to sea levels is insufficient to explain all the data.

　　Why does the author mention the survival of “snakes, lizards, turtles, and crocodiles” in paragraph 3?

　　○To argue that dinosaurs may have become extinct because they were not cold-blooded　animals

　　○To question the adequacy of the hypothesis that climatic change related to sea levels　caused the extinction of the dinosaurs

　　○To present examples of animals that could maintain a livable body temperature more　easily than dinosaurs

　　○To support a hypothesis that these animals were not as sensitive to climate changes in　the Cretaceous period as they are today

　　例二：The identity of the Beowulf poet is also uncertain. He apparently was a Christian who loved the pagan heroic tradition of his ancestors and blended the values of the pagan　hero with the Christian values of his own country and time. Because he wrote in the　Anglian dialect, he probably was either a monk in a monastery or a poet in an　Anglo-Saxon court located north of the Thames River.

　　why does the author of this passage use the word “apparently” in the paragraph 5?　He is not certain that the author of Beowulf was a Christian.

　　He is mentioning facts that are obvious to readers.

　　He is giving an example from a historical reference.

　　He is introducing evidence about the author of Beowulf.


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