I like my toy plane. It can fly. It's .
A：sweet
B：sour
C：super
把代数式ax2-4ax+4a分解因式，下列结果中正确的是（ ）
In the big earthquake all their houses were________，so they had to build new ones.
A. I'm number thirteen.
B. He's a postman.
C. He is in Class Two.
D. I'm number three, too
下列表述不正确的一项是（ ）
