—Yes, it ____ so nice! I'd like to have some more.
A:smells
B:tastes
C:feels
D:sounds
在△ABC中,a=b是acosA=bcosB的 ( )
设z=x+y,其中x,y满足x+2y≥0x-y≤00≤y≤k,若z的最大值为6,则z的最小值为 ( )