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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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Where did the writer live when she was a high school girl
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