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  3. The idea of "evolution" is very clearly shown in the story of horse. Millions of years ago, the horse called Eohippus with small

The idea of "evolution" is very clearly shown in the story of horse. Millions of years ago, the horse called Eohippus with small

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问题     The idea of "evolution" is very clearly shown in the story of horse. Millions of years ago, the horse called Eohippus with small teeth and four toes(脚趾) lived in the ground where the plants were easy to chew. Because of changing climate and plants, horses with larger teeth, three toes, till one toe appeared. Finally Eohippus died out and the one-toed survived so well over the grasslands by the time the first man appeared on earth. Darwin considered all modern animals had gradually developed and so had man. The earliest men, with sloping (倾斜) foreheads and much smaller brains, like Eohippus seem to have died out—the weak ones died out and the well-equipped ones survived (继续存在). Also, like the animals on the different Galapgos Islands, men developed differently according to the condition in which they lived. People living in very hot countries developed black skins, which are good protection against the sun’s rays, and people like the Mongols and Eskimos living in very cold climates have flatter faces and rounder bodies than people else where, to protect them from the cold.
According to the passage, we know that______.
选项 A、the earliest men in different places developed differently
B、Eskimos’black skin is helpful to protect them from cold
C、People in Africa have flatter faces than people in other places
D、the earliest men have the same foreheads and brains as men today
答案A
解析 从文中“…men developed differently according to the condition in which they lived”可以分析出答案，而其他3项都是错误的。故正确的答案为A。
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