以下URL地址写法正确的是( ).
(A)http:/www.sinacom/index.html
(B)http://www.sina.com/index.html
(C)http//www sinacom/index.html
(D)http//www.sina.com/index.html
参考答案
继续答题:下一题
(A)http:/www.sinacom/index.html
(B)http://www.sina.com/index.html
(C)http//www sinacom/index.html
(D)http//www.sina.com/index.html