单选题
23.
The human body is composed of organs, each______a definite job to do.
A、
has
B、
having
C、
to have
D、
had
【正确答案】
B
【答案解析】
each having a definite job to do“每一个都有自己明确的分工”。这个分词独立结构放在主句之后，进一步补充细节情况。
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