问题
选择题
— What doesn't have wings?
— _______________.[ ]
A. A bird
B. A bee
C. A fish
答案
答案：C
搜题请搜索小程序“爱下问搜题”
— What doesn't have wings?
— _______________.[ ]
A. A bird
B. A bee
C. A fish
答案：C
2CuO+H2O+CO2↑ 
CO2+2H2O 
2KCl +3O2↑