| Small mammals, being warm blooded, suffer hardship in the exposed and turbulent environment of the uppermost trees. Because a small body has more surface area per unit of weight than a large one of similar shape, it gains or loses heat more swiftly. Thus, in the trees, where shelter from heat and cold may be scarce and conditions may fluctuate, a small mammal may have trouble maintaining its body temperature.
According to paragraph 2, which of the
following is true about the small mammals in
the rain forest?
(A) They have body shapes that are adapted to
life in the canopy.
(B) They prefer the temperature and climate of the canopy to that of other environments.
(C) They have difficulty with the changing conditions in the canopy.
(D) They use the trees of the canopy for shelter from heat and cold.
答案
我觉得应该是C啊.文章里不是说Thus, in the trees, where shelter from heat and cold may be scarce and conditions may fluctuate, a small mammal may have trouble maintaining its body temperature.
请NN指点！
另外, 现在在做模考的时候，经常有答案想不明白，CD上搜索也没有相应的讨论。真是超级郁闷啊！ | 
