1000____999 99____101 1111____9999 999____1001
1010____999 99____100 1001____999 940____1899
1350____2365 1899____1350 940____1350 1899____2365
2020____2200 3509____3510 1001____989 5035____4999
水蜜桃味甜,毛桃味酸,现将水蜜桃(接穗)接到毛桃(砧木)上,成活后,结出的成熟果实,其味是( )
假如黄赤交角增大到25°,则( )
若多项式x2+x10=a0+a1(x+1)+…+a9(x+1)9+a10(x+1)10,则a9=____