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Large animals that inhabit the desert have evolved a number of adaptations for reducing the effects of extreme heat.【C1】______ad
Large animals that inhabit the desert have evolved a number of adaptations for reducing the effects of extreme heat.【C1】______ad
admin
2015-04-24
65
问题
Large animals that inhabit the desert have evolved a number of adaptations for reducing the effects of extreme heat.【C1】______adaptation is to be light in color, and to【C2】______rather than absorb the sun’s rays. Desert mammals also depart from the normal mammalian practice of maintaining a 【C3】______body temperature.【C4】______trying to keep down the body temperature deep inside the body, which would involve the expenditure of water and energy, desert mammals allow their temperatures to rise to what would normally be fever【C5】______, and temperatures as high as 46 degrees Celsius have been measured in gazelles(瞪羚羊).
Another strategy of large desert animals is to tolerate the loss of body water to a point【C6】______would be fatal for non-adapted animals. The camel can lose up to 30 percent of its body weight as water without harm to itself,【C7】______human beings die after losing only 12 to 13 percent of their body weight. An equally important adaptation is the ability to【C8】______this water loss at one drink. Desert animals can drink prodigious’ volumes in a short time, and camels have been known to 【C9】______over 100 liters in a few minutes. A very dehydrated person,【C10】______, cannot drink enough water to rehydrate at one【C11】______, because the human stomach is not sufficiently big and because a too rapid【C12】______of the body fluids causes death from water intoxication. The 【C13】______of water loss is of obvious advantage in the desert, as animals do not have to remain 【C14】______a water hole but can obtain food from grazing sparse and far-flung pastures. Desert-adapted mammals have the further ability to feed normally when extremely dehydrated; it is a common experience in people that appetite is lost even【C15】______conditions of moderate thirst.
【C4】
选项
A、Besides
B、Apart from
C、In order to
D、Instead of
答案
D
解析
逻辑关系。通读全句,前半句谈到“设法保持体内温度,这只是会耗费水和能量”,后半句谈到“为了节省能量只好任由体温升高”。故可推断本句逻辑是否定前半句而肯定后半句。instead of表示“代替,而不是……”,符合句意。故答案为D。
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考博英语
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