A. open.new("http://www.w3school.com.cn","window2") 
B. new.window("http://www.w3school.com.cn","window2") 
C. new("http://www.w3school.com.cn","window2") 
D. window.open("http://www.w3school.com.cn","window2") 

A. Math.ceil(2,4) 
B. Math.max(2,4) 
C. ceil(2,4) 
D. top(2,4)