Look, you can see many _________ in the pool. And here is some ________for you to keep them.
A:fish; suggestion
B:fishes; advices
C:fish; advice
D:fishes; suggestions
手提重物时,肱二头肌和肱三头肌处于的状态分别是( )
①Cl2+2KI═I2+2KCl ②2FeCl3+2HI═I2+2FeCl2+2HCl
③2FeCl2+Cl2═2FeCl3 ④I2+SO2+2H2O═2HI+H2SO4.
下列句子中加横线的成语使用不恰当的一项是( )。