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In the given set of materials, the reading passage and the lecture deal with the bison to debate whether their number plummeted with the European colonization. The reading passage is providing three pieces of evidence to prove its point, whereas the lecturer argues against it by providing three compelling rebuttals.
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The reading passage asserts the idea that the first reason for the sharp decline in their numbers was overhunting. While the Native Americans took bison in large numbers, they only thinned the herds, taking only what they could use. The large scale of Europen fur business had a large impact on bison numbers. The professor casts doubt because __________(¸®½º´× Àüü)___________________
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The reading claims that the second way in which the Europeans decimated the wild buffalo herds was through the use of modern weapons such as guns. The bison were unable to escape these accurate, longer-range weapons, which, therefore, dramatically lowered the number of wild bison on the American plains. The professor refutes the idea because ________(¸®½º´× Àüü)____________
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The reading points out that the final reason for the dramatic decrease in the number of roaming bison after European settlement was the westward expansion of European, and later America, settlements. As more settlers set down, demarcated homesteads for their livestock, the bison had less and less access to the grasslands they once roamed over, leading to weakened herds. The professor challenges the idea because _____(¸®½º´× Àüü)______
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In the given set of materials, the reading passage and the lecture deal with the last non-avian dinosaurs, Edmontosaurus to debate whether they survived the extremely cold winters of Alaska and Northwestern Canada just by not being there. The reading passage is providing three pieces of evidence to prove its point, whereas the lecturer argues against it by providing three compelling rebuttals.
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The reading passage asserts the idea that the most likely explanation of Edmontosaurus¡¯ ability to survive these extremely cold winters is that they simply weren¡¯t there. that they were plant-eaters, so they likely migrated with the changing of the seasons in order to find grass. The professor casts doubt because __________(¸®½º´× Àüü)___________________
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The reading claims that the second factor for supporting the yearly migration of the Edmontosaurus is the discovery of their remains in the polar ice region. Animals that live in herd-like
Due to the fact that numerous skeletal remains were found in a concentrated area, it is thought that they lived in herd-like groups, similar to modern migrating animals, like the caribou.??. The professor refutes the idea because ________(¸®½º´× Àüü)____________
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The reading points out that their ability to stand on their hind legs and run would have allowed them to migrate more easily. Moving in this way allowed them to cover larger distances in less time. The professor challenges the idea because _____(¸®½º´× Àüü)______
±ÛÀÚ¼ö: 1308ÀÚ
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Total 14,054
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