单项选择题

A．By the work of biologists.
B．In the process of evolution.
C．Over millions of years.
D．Both A and B
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单项选择题
A．They design the dresses themselves.B．They alter the dresses they have.C．They buy inexpensive clothes.D．They don’t mind the fashion in clothes.
A．They design the dresses themselves.
B．They alter the dresses they have.
C．They buy inexpensive clothes.
D．They don’t mind the fashion in clothes.
单项选择题
A．The professor wasn’t present.B．The professor put off it.C．Too many students showed up.D．He missed the class.
A．The professor wasn’t present.
B．The professor put off it.
C．Too many students showed up.
D．He missed the class.
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