题目

This is by far movie that I have ever seen. A . an inspiring B . a more inspiring C . the most inspiring D . a much inspiring 答案：C聚氯乙烯(PVC)材质的雨衣与聚乙烯(LDPE)材质的保鲜膜，都会含有哪一种元素 [　　] A．碳B．硫 C．氧D．氮