下列实验操作中,正确的是( )
A:加热液体
B:过滤
C:稀释浓硫酸
D:称量固体
如图,分别延长▱ABCD的边CD,AB到E,F,使DE=BF,连接EF,分别交AD,BC于G,H,连结CG,AH.
求证:CG∥AH.
The food tastes . We all enjoy it .
一次函数y=(k-3)x|k|-2+2的图象不经过( )
His flight to New York will _______ from Shanghai International Airport in two hours.