There ________ a dog, two ducks and three cats in the lost and found office.

函数f(x）在定义域R内可导，若f(x)=f(2-x)且（x-1）f'(x)<0，若a=f(0),b=f($\frac{1}{2}$),c=f(3)则a,b,c的大小关系是(    )

32×2=____       364＋36=____        93－54=____ 

40×7=____       53×3=____       207×9=____  

500×6=____       0×29=____       33÷8=____

45÷7=____        $\frac{6}{7}$ － $\frac{1}{7}$ =____       $\frac{4}{9}$ ＋ $\frac{5}{9}$ =____

1－ $\frac{3}{4}$ =____       7×201≈____      390×8≈____

24－24÷6=____     4＋6×5=____     （72-32）÷8=____