◎ 题干
The heart is believed to _____blood into veins(血管) which are netted all over the body, thus keeping a   person alive.
[     ]
A. give    
B. donate    
C. circulate  
D. pump
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The heart is believed to _____blood into veins(血管) which are netted all over the body, thus keeping a person alive. [ ]A. give B. donateC. circulate D. pu…”主要考查了你对  【动词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。