关于游泳的英文小短文(本人小学六年级) 5

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发布于2008-03-15 09:11 最佳答案
 Almost all mammals can swim by instinct. Swimming is an activity that is both useful and recreational for many species, usually without artificial assistance. Ostriches, despite their rather strange shapes;s ability to swim can be judged by speed or stamina. Its primary uses are bathing, travel. The few exceptions include apes and possibly giraffes, kangaroos, fishing and escape. Land birds can swim or float for at least some time, cassowaries and tortoises can swim. An individual', cooling. Bats, moles and sloths can swimSwimming is movement by humans or animals in water.

Animals with lungs have an easier time floating than those without

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