A:硝酸银溶液 硝酸钡溶液 稀硝酸
B:氯化钡溶液 稀硝酸 硝酸银溶液
C:氢氧化钠溶液 硝酸银溶液 稀硝酸
D:氯化钡溶液 硝酸银溶液 稀硝酸
有关绿色植物生理活动的叙述,错误的是( )
北美洲和南美洲的分界线是( )
My name's John.Today is my birthday.I'm nine.I like animals(动物).I like pandas.They are funny.I like eating, too.I like fish and eggs.I have a birthday cake and many gifts.Let's eat the birthday cake,OK?