某人的电子邮箱为ncre@csai.cn，对于“ncre”和“csai.cn”的正确理解是（）

在网页地址“http： www.educity.cn main index.htm”中，“index.htm”是（）

A．协议名
B．域名
C．主机名
D．页面文件名

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SECTION B NOTE-WRITING （10MIN）Write on the ANSWER SHEET ONE a note of about 50-40words based on the following situation：It is reported that Newly Selected Reading of American Literature has been published.You want to have one for your postgraduate examination.Write a note of about 60words asking the price and the way how you pay for it.Marks will be awarded for content，organization，grammar and appropriacy. 点击查看答案