Mr. Black: __________
Mike: Very well, thank you.
A：What's your name?
B：How are you?
C：I have a book.
D：Good morning.
下列关于生物武器的说法，错误的是（ ）
因式分解：a2﹣3a=____
hú lú
jī chǔ
____
Hi (同义词) ____
