若(a+1)2+|b﹣2|=0,求a2000•b3的值.
解:由题意得,a+1=0,b﹣2=0,
解得,a=﹣1,b=2,
a2000•b3=1×8=8.
下列对铁的性质的描述中,属于化学性质的是()
找出不是对偶句的一项是( )
—I __________, but I had to work extra hours to finish my homework.
— No, you don't have to, but you give them to me tomorrow.