（-3）-3=______，（π-3）0=______．
（-3）3=1(-3)3=-127；
（π-3）0=1；
故答案为：-127、1．
Anyone in the lab has to the following dos and don’ts.
A．observe
B．consult
C．recognize
D．direct
We have socks _____ white, yellow, black and red _____ only $3.[ ]
A. at; for
B. in; for
C. for; in
