用足量的CO还原32.0 g某种氧化物,将生成的气体通入足量澄清石灰水中,得到60 g沉淀,则该氧化物是 [ ]
A FeO
B Fe2O3
C CuO
D Cu2O
答案:B
“Show me your permit, please.” “Oh, it’s not in my pocket. It ______.”
A.might fall out
B.could fall out
C.should have fallen out
D.must have fallen out
第二部分
我现在不会用筷子。()