题目内容
Experts warn that medical waste from hospitals, if properly, may contribute to spreading diseases.
A.not handledB.not being handled
C.not to be handledD.not having been handled
A
【解析】
试题分析:考查非谓语动词。句意:专家警告说,如果医院的医疗垃圾不能正确的处理,可能会导致疾病的蔓延。If 引导的条件句的主语是 medical waste from hospitals ,与handle之间是被动关系,故选A项。
考点 : 考查非谓语动词
练习册系列答案
相关题目