下列运算正确的是( )。( )–Who’s that speaking?– __________.首先发现电流磁效应的科学家是-3(x-1)=-3x-1
-3(x-1)=-3x+1
-3(x-1)=-3x-3
-3(x-1)=-3x+3#I’m Michael
That’s Michael speaking
It’s m
17.1. Mary is _________ of the three girls.下列过程中利用了化学变化的是( )sports#
movies
fruits
Chinesethe youngest#
youngest
the younger
the most young用疏通淤泥的办法整治广州市的河涌
用稀盐酸使