Experts warn that medical waste from hospitals, if properly, may contribute
题型：不详难度：来源：
Experts warn that medical waste from hospitals, if properly, may contribute to spreading diseases．| A．not handled | B．not being handled | | C．not to be handled | D．not having been handled |
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答案
| 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 |
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