【解析】选。文中提到的Their blood stays at the sane temperature, even...表明,鲸的体温是衡定不变的,选项正确。
35. In what way do whales distinguish themselves from other land mammals?
【解析】选。从短文的末句Almost all land mammals, except man, have hair on their bodies to keep them warm, but whales, which have very few hairs, are kept warm by their fat可以得知,鲸和其他哺乳动物的区别在于:其他哺乳动物靠身上的毛取暖,而鲸鱼身上几乎没有毛。选项为答案。
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