C:3.2 g
D:5.6 g
A:6.0 g
B:4.8 g
先化简,再求值:(a+2a2-2a+1-aa2-4a+4)÷a-4a,其中a满足a2﹣4a﹣1=0.
Kate doesn't____ ____her mother at all.
It's short ____ fat.
下列命题中,为假命题的是( )