This is an illness that can total blindness if it is left untreated.A.result fromB.lead inC.result inD.leave behind
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C解析试题分析：句意：这种病如果放任不治的话会导致完全失明。result from起因于（后跟原因）；lead in导入（开场白）；result in导致，结果是（后跟结果）；leave behind留下，遗留。根据句意故选C。考点：考查动词短语的用法
点评：考查动词+介词构成的动词短语，平时应熟记这些短语的意义及用法。即学即练：The mistake his carelessness.A. resulted from B. led in C. resulted in D. left behind解析：A句意：这个错误是由于他的粗心造成的。