归经是指药物作用的趋向性。
参考答案:错
Jeff _____ ice cream every day. [ ]
A. has
B. have
C. eat
D. to eat
电子邮件软件向邮件服务器发送邮件时使用的协议是
A.SMTP
B.POP3
C.IMAP
D.MIME