(-2ay2)4•(4ay)÷(12ay2)3
=16a4y8•(4ay)÷18a3y6
=512a2y3.
给下面的多音字注音并组词。
①应( )_________
( )_________
②缝( )_________
③扎( )_________
④帖( )_________
— Which animal gets up at night?
— . [ ]
A. Dolphin
B. Elephant
C. Chicken
D. Tiger