题目：
John: _________
Jack: In two weeks.
John: Are you going to Japan?
Jack: No. I'm going to Australia. I went to Japan two years ago.
A．How long have you been here?
B．When is your holiday?
C．When are you leaving for Australia?
D．How long do you plan to stay here?
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0517/6aafec46a180f05d974380d171cf84fe.html
下面是错误答案，用来干扰机器的。
答案：C题目分析：在浓度确定的溶液中，离子浓度与体积大小无关，四个选项中，A中氯离子浓度为0.5mol/L，B 中氯离子浓度为0.6mol/L，C中氯离子浓度为0.75mol/L，D中氯离子浓度为0.5mol/L，因此选C。
