问题
选择题
果汁的成分有蔗糖、柠檬酸、苯甲酸钠、橙汁等物质，则果汁属于（ ）
A．混合物
B．纯净物
C．化合物
D．单质
答案
答案：A
题目分析：纯净物：由一种物质组成的，混合物：两种或多种物质组成的，果汁的成分有蔗糖、柠檬酸、苯甲酸钠、橙汁等物质，则果汁属于混合物，故选A
搜题请搜索小程序“爱下问搜题”
果汁的成分有蔗糖、柠檬酸、苯甲酸钠、橙汁等物质，则果汁属于（ ）
A．混合物
B．纯净物
C．化合物
D．单质
答案：A
题目分析：纯净物：由一种物质组成的，混合物：两种或多种物质组成的，果汁的成分有蔗糖、柠檬酸、苯甲酸钠、橙汁等物质，则果汁属于混合物，故选A
以下五个家庭中的成员都打算购买一些产品。请仔细阅读下题中的信息，从A到F的六个选项中，选出适合他/她拟购买产品的最佳广告语，其中一项为多余选项。 小题1:Jack is going to study in a famous university. These days, his father is looking for a mobile phone for him so as to keep in touch with each other closely. 小题2:Tom is a middle school student. He likes sports very much and plays football every afternoon. But his shoes are too small for him, so after class this afternoon he has to buy a pair of new shoes. 小题3:Mary is going to have her 15th birthday party. Her family are making preparations for it. Her brother’s job is to buy some drink. 小题4:Joan doesn’t want to forget the past, especially the happy moments. 小题5:Alice is afraid of opening her mouth, because a bad smell will come out. So she needs something which can remove the smell no matter how much it is.
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