It is a kind of illness that can result in total blindness if______.A、to leave u

游客2024-08-15  15

问题 It is a kind of illness that can result in total blindness if______.

选项 A、to leave untreated
B、is left untreated
C、leaving untreated
D、left untreated

答案 D

解析 句意:这种疾病如果不治疗的话会导致完全失明。这里是状语从句的省略。条件句中,如果含有be动词。并且主语与主句主语一致,那么该从句的主语和be动词可以一起省略。故选项D正确。
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