单项选择题

The different ways men and women move their body indicate that ______.

A．bone structures in men and women are arranged differently
B．women's bones are more ready to movement
C．men always move their bodies with waste motions
D．women are good at climbing upwards

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单项选择题

That boys suffer more from air pollution can possibly be justified by the fact that ______.

A．the male have larger bones than the female
B．women can manufacture blood more efficiently than men
C．men usually breathe more deeply than women
D．women breathe as often as men