教科书出版商将教授、教师和学生联系在一起，而开放式电子教科书和开放式教育资源等替代方式根本无法做到这一点。
Textbook publishers connect professors, instructors and students in ways that alternatives, such as open e-textbooks and open educational resources, simply do not.
如果你想成为一名教师，请写信到中华路第38号。如果你想知道更多关于导游招募的信息，可以发电子邮件咨询。
If you want to be a teacher, please write to No.38 Zhonghua Rd. If you want to know more information about tour guides wanted, you can send an e-mail.
辅导教师会给你的作业评分，你可以通过电话、信件或电子信件跟他联系请他帮助。
Your tutor marks your assignments and is available by phone, mail, or email to help you along.
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