题目

下列物质中,不属于有机合成材料的是(    )    A.聚氯乙烯        B.电木塑料      C.有机玻璃       D.钢化玻璃 答案:D If you go to Xi’an, you will find the palaces there more magnificent than commonly___. A.supposing B.supposed  C.to suppose D.suppose
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