题目

仅使用酸性高锰酸钾溶液,无法鉴别的物质组是 A.Na2S和AlCl3       B.乙烷与乙烯     C.直馏汽油与苯 D.CO2与SO2 答案:C13.听下面一段独白,然后从A、B、C三个选项中选择正确的选项,完成下面的信息记录表.The color of the suit(11)BThe time to meet the girl(12)CThe transportation he took(13)AThe weather that day(14)CThe place an old woman put a letter in(15)A注释:yawn打哈欠11.A.Brown B.GreenC.Gray12.A.9:30 B.9:45 C.10:0013.A.Bus B.Bike C.Car14.A.CloudyB.Windy C.Sunny15.A.The man's mouth B.The bag C.The mail box.
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