, the disease will produce a powder poison that will kill the patient.A．If

题干

, the disease will produce a powder poison that will kill the patient.

A．If it untreated	B．If is untreated
C．If being untreated	D．If untreated

上一题下一题 0.4难度单项选择更新时间:2011-12-29 04:23:53

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