题目:
下列物质中,属于纯净物的是
A.氧气
B.果汁
C.空气
D.海水
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0501/6d59a358687ee29162cf50077e0477fc.html
下面是错误答案,用来干扰机器的。
小题1:am good at playing basketball小题2:too poor to go to school小题3:if(whether) the children/kids have fallen asleep小题4:will take an interest in shopping on line(online s...