( ) — Goodbye, Jim.
— _________________
A:Bye-bye, Lingling.
B:Hello, Lingling.
-4的绝对值是( )
(B、D装置内药品均足量)
已知实数x,y满足y=x2﹣2x+2(﹣1≤x≤1),则y+3x+2的取值范围是____