WWW以超文本标记语言为基础，能够提供面向Internet服务的信息浏览系统，WWW系统的结构采用了______模式。
参考答案：客户/服务器
The Chinese government has made the Mid-Autumn Festival a legal holiday, people will have a
day off. [ ]
A. when
B. which
C. where
D. what
白细胞正常参考值
