I will tell him to call you as soon as he back.
A:come
B:comes
C:came
D:coming
如图所示,将铁棒和石墨棒插入1 L 1 mol·L-1食盐水中。下列说法正确的是( )
读图“俄罗斯地形与矿产分布图”,完成下列各题。
|﹣3|的相反数是
移动一根火柴,使式子成立。