, the disease will produce a powder poison that will kill the patient.A
题型：不详难度：来源：
, 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 |
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答案
| D |
解析
试题分析：句意：如果不得到治疗，这种疾病将会产生***死病人的粉末状病毒。完整形式为：If the disease diphtheria is untreated…，从句的主语与be动词省略了，选D。 |
举一反三
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