题目内容
The human body consists of organs, each ____a definite job to do.
| A．have | B．to have | C．has | D．having |
D
解析试题分析：句意：人的身体由器官组成，每个器官都有一定的工作做。本题两部分之间没有连词，说明后半部分不是句子，而是独立主格结构。独立主格结构是由名词+非谓语构成，排除AC。Each与have构成主动关系，故使用现在分词的形式。each having a definite job to do="and" each has a definite job to do.故D 正确。
考点：考查独立主格结构
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| A．A number | B．A lot | C．Lots | D．The number |
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| A．was | B．is | C．were | D．hadbeen |
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| A．was | B．being |
| C．would be | D．to be |
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| A．settled | B．settling | C．to settle | D．being settled |
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| A．nobody alive | B．nobody was alive | C．and nobody alive | D．where nobody alive |
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| A．using up | B．missed | C．running out | D．run out |
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| A．As | B．With | C．When | D．If |
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| A．finishing | B．finished |
| C．had finished | D．were finished |