简单学习网在全国首创“互动封闭拟真课堂”。其独特之处在于：模拟真实课堂，基于智能错题本、课后练习和快速网络答疑，融名师系统讲授和“1对1”个别辅导为一体。旨在帮助全国的中学生“反复... 学校首页
2.Sending atachments through email
2.通过电子邮件发送附件
-"I received your email,but I didn't receive the attachments."
-"My company prevents many types of attachments.Can you send a text file instead?"
-"Before you send the document,change the extension .doc to .txt and then send it.When I receive it,I will change it back to .doc before I open it"
-"Hi Mary I sent you an email with my proposal as an attachment Did you receive it?"
注意：传输文件格式有问题的时候，你可能会用到上面这几句话;extension 在这里的意思是文件的后缀
