, the disease will produce a kind of poison that will kill the patient.
A. If it untreated
B. If is untreated
C. If being untreated
D. If untreated
网友回答
A. If it untreated
B. If is untreated
C. If being untreated
(答案→)D. If untreated
解析：
这题考查if条件句的省略式：当主从句的主语一致时，可以省略主语和be动词，If untreated=if the disease is treated，句意是：如果这个病不治疗的话会产生一种毒药制人的命。选D