个人计算机中申请了账号并采用PPP拨号方式入网后,该机就拥有了固定的IP地址。
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E-mail是用户或用户之间通过计算机网络收发信息的服务。
A. 对
B. 错
收发电子邮件时,接收方必须了解对方电子邮件地址才可发回函。
A. 对
B. 错
He is now ______ in Shanghai.
A. living
B. lives
C. live
D. lived
Jane ______ law while her sister ______ physics.
A. studies, does
B. is studying, does
C. is studying, is doing
D. studies, is doing