When you do exercises, your heart works better. It is able to more blood while beating mor

发布时间：2020-08-15 00:30:26

When you do exercises, your heart works better. It is able to     more blood while beating more slowly.
A. produce
B. pump
C. increase
D. bump

网友回答

A. produce
(答案→)B. pump
C. increase
D. bump
解析： “泵入更多的血”。A.“产生”；C.“增加”；D.“碰，撞”。
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