把多项式2x2y+3xy2﹣x3﹣y3按x的升幂排列得:( )
﹣y3+3xy2+2x2y﹣x3
Christina Ricci has praised RobertPattinson for the way he deals with such a huge level of fame,
and joked that he is as _____ as a member of The Beatles. [ ]
A. famous
B. large
C. small
D. strong
比较根霉与毛霉菌体形态的异同?