英语书信语言很讲究，把握不好就会失去求职和晋升的机会。《英语小测验》帮你识别信函和电子邮件中出现的正式与非正式用语。1.email?2.letter?3.letter?2013.4.email?service.service.5.email?touch.phone.mate.6.email?regardswishesbest答案a....