They provide evidence that undermines the view that the Weddell seal relies on an anaerobic metabolism during its most typical dives in the wild.
They are based on the assumption that Weddell seals rarely spend more than twenty minutes underwater on a typical dive in the wild.
They provide an accurate account of the physiological behavior of Weddell seals during those dives in the wild in which they are either evading predators or exploring distant routes.
6. The author cites which of the following as characteristic of the Weddell seals physiological behavior during dives observed in the laboratory?
Ⅰ. A decrease in the rate at which the seals heart beats
Ⅱ. A constriction of the seals arteries
Ⅲ. A decrease in the levels of lactic acid in the seals blood
Ⅳ. A temporary halt in the functioning of certain organs
Ⅰand Ⅲ only
Ⅱ and Ⅳ only
Ⅱ and Ⅲ only
Ⅰ,Ⅱ, and Ⅳ only
Ⅰ,Ⅲ, and Ⅳ only
7. The passage suggests that because Weddell seals are forcibly submerged during laboratory dives, they do which of the following?
Exhibit the physiological responses that are characteristic of dives in the wild that last less than twenty minutes.
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★ SAT阅读练习题:Reading Comprehension Test 13
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