2. 外语
  3. Choose the THREE answer choices that express the most important ideas in the passage above. An introductory sentence for a brief

Choose the THREE answer choices that express the most important ideas in the passage above. An introductory sentence for a brief

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问题 Choose the THREE answer choices that express the most important ideas in the passage above. An introductory sentence for a brief summary of the passage above is provided below.
Although amphibians are poor thermoregulators, they do have some control over their body temperature.
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Answer Choices
(A) Frogs, which survive temperature ranges from as low as -2℃ to as high as 41℃, are evidence that amphibians are independent of ambient temperature.
(B) Amphibians can increase their body temperature by exposing themselves to the sun (heliothermy) and by pressing against the ground (thigmothermy).
(C) Avoidance behaviors, such as sheltering from the sun, as well as estivation and hibernation, help amphibians control their body temperature.
(D) Physical adaptations offer amphibians a number of ways to protect themselves against extreme or dangerous climate conditions.
(E) Sunrise is the time when some amphibian species have the greatest need for thermoregulatory mechanisms.
(F) Hibernation always involves digging deep holes in mud or sand, whereas estivation sometimes involves nothing more than hiding in deep rock crevasses.
选项
答案B,C.D
解析
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