— Are you relaxing yourself here?
— Yes. It feels ________ to walk slowly along the river.
A:fantastic
B:boring
C:strange
D:terrible
一台冰箱的价格先提高20%,然后再打九折,结果与原价相比( )
分式1a2-2a+1,1a2-1,1a2+2a+1的最简公分母是( )