单选题
An animal weighing less than 2.5 grams would starve because it would not be able to ______.
A、
get enough oxygen
B、
maintain its body temperature
C、
bum its food fast enough
D、
eat fast enough to supply fuel
【正确答案】
D
【答案解析】
文章最后一段指出体重不足2.5克的动物会饿死，是因为它们burn up its food too rapidly and would not be able to eat fast enough to supply more fuel。
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