单项选择题

A．Man is also a kind of animal.
B．There have been men for more than a million years.
C．Like any other animals, man slowly changed through time.
D．There were men a few million years ago.
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单项选择题
A．Patient.B．Surprised.C．Worried.D．Irritate
A．Patient.
B．Surprised.
C．Worried.
D．Irritate
单项选择题
A．The heart pumps blood in two directions.B．The blood is circulated round the body in one direction only by the pumping action of the heart.C．The blood moved with a backward and forward motion.D．The heart pumps blood in all directions.
A．The heart pumps blood in two directions.
B．The blood is circulated round the body in one direction only by the pumping action of the heart.
C．The blood moved with a backward and forward motion.
D．The heart pumps blood in all directions.
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