HTML语言一般被我们标记分为三大类，分别是（）
A.文本元素
B.文档结构元素
C.初级代码元素
D.格式元素
E.链接元素
参考答案：B, D, E
______是教师从事教育教学工作的重要工具，是传播知识和影响学生的重要手段。
The computer has dramatically affected just like photographic lenses are constructed.
A．is the way we constructed the photographic lenses.
B．that the way we constructed the photographic lenses.
C．which way do photographic lenses are constructed.
D．the way photographic lenses are constructe
