8. “Generally acknowledge. If the professor deigns to answer—or send out you the handout or reference which you asked for—be sure to inform her or him which you obtained it. This way they will Feel kindly of you up coming time they see you at school.” 这里还要提醒的是，请勿直接复制粘贴。有时，当销售群发电子邮件时，他们会忘记不同的采购商名称或者需求不一样，并最终在主题行输入错误的标题... http://brooksu3d45.pages10.com/How-Much-You-Need-To-Expect-You-ll-Pay-For-A-Good--45956366