If without following the doctor’s instructions, the medicine may have serious side effects.
A. Taken
B. to be taken
C. Taking
D. being taken
网友回答
(答案→)A. Taken
B. to be taken
C. Taking
D. being taken
解析：考查状语从句的省略：句意：如果没有按照医生的说明吃药，它可能会有严重的副作用。这句话的原句是if the medicine is taken without following the doctor’s instructions，…..，如果主从句的主语一致，可以省略状语从句中的主语和be动词，选A。