The heart is an important organ of circulation______function is to pump blood to all parts of the body.

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问题 The heart is an important organ of circulation______function is to pump blood to all parts of the body.

选项 A、which
B、whose
C、ofit
D、its

答案B

解析 选项A的which应该在定语从句中担任一定的成分,但空格之后的句子是主系表结构,主谓成分已经很齐全,所以不适合;选项C不能使原句的结构成立;而假如把its放在空格处,在其前应该加句号将两句分开,故D也不合适:选项B的whose作关系代词时,既可指人,也可指物,符合题意,故选B。
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