根据《烧结多孔砖和多孔砌块》GB13544-2011的要求，多孔砌块进场复试按（）万块为一批。
参考答案：3.5一15万
Peter's jacket looked just thesame as Jack's，but it cost________his. [ ]
A. as much twice as
B. twice as much as
C. much as twice as
D.as twice much as
工作场地保持清洁，有利于提高工作效率。( )
