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[参考范文]
这篇文章对影响全球环境的各种因素作了分析。
My O......

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单项选择题
The purpose of the author in wring this passage is ______.
A．to celebrate Mother's Day
B．to commend the role of the female in the history of human evolution
C．to have a general review of human evolution
D．in honor of mothers all over the world
单项选择题
According to the passage, which of the following human features evolved first
A．The development of human brains.
B．Upright posture of two-leg walking.
C．The change of the skeletons.
D．The use of language.
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