The child that parents died in the air crash is living with his aunt now.()

A.who

B.which

C.that

D.whose

A.action

B.paren

C.href

D.checked

A.self与paren

B.self与top

C.top与parent

D.self、parent、to

A.action

B.paren

C.align

D.checked

Internet超文本HTML文档，由成对出现的标志(tag)划分为不同的部分与层次。

a)试拓展paren()算法(教材93页代码4.5)，以支持对以上HTML标志的嵌套匹配检查;

b)继续扩展，以支持对任意“＜myTag＞...＜/myTag＞”形式标志的嵌套匹配检查。

The child has a lot of presents and surprises waiting for her birthday. (翻译)