重要提示：
请勿将账号共享给其他人使用，违者账号将被封禁！
题目内容
（请给出正确答案）
听力原文：M: I came at 12 o'clock when I was going home for lunch, but you weren't here.
W: No, I was training for tomorrow's race. It's 26 miles, you know.
Q: What was the woman doing when the man came to her room？
(4)
A．Preparing for the race of Marathons.
B．Preparing for the cycling race the next day.
C．Training for a hiking race.
D．Doing an experiment.
更多“听力原文：M: I came at 12 o'clock when I was going home for lunch, but you weren't here.W:”相关的问题
第3题
从钙、镁的氯化物溶液蒸发结晶出来的固体都是水合物。固体焙烧可得无水氯化钙，但得不到无水氯化镁。( )
第4题
计算题：称取1.721g某种硫酸钙的结晶水合物（CaSO4·nH2O）加热，使之失去全部结晶水，这时硫酸钙的质量是1.361g，试计算1mol结晶水合物中含多少摩尔结晶水。
客服
TOP
警告：系统检测到您的账号存在安全风险
为了保护您的账号安全，请在“上学吧”公众号进行验证，点击“官网服务”-“账号验证”后输入验证码“”完成验证，验证成功后方可继续查看答案！
