题目

衡量石油化工发展水平的标志是(    )   A、乙烯产量                    B、丙烯产量      C、汽油产量                    D、丁二烯产量 答案:AThree_______are in this photo. They are my mother,my aunt and my friend’s mother.A. woman B. women C. womans D. womens
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