—Yes. She said we should meet there at nine.
A:which was the way to the station
B:why we should meet at the station
C:when we should get to the station
D:who we should meet at the station
实验操作
实验现象
实验结论
A
用带火星的木条伸入盛有某无色气体的集气瓶中
木条复燃
该无色气体为O2
B
将某气体燃烧,在火焰上方罩一个冷而干燥的烧杯
烧杯内壁有水珠生成
该气体一定是H2
C
向某无色溶液中滴加BaCl2溶液
产生白色沉淀
该无色溶液中一定含有H2SO4
D
将水注入盛有浓硫酸的烧杯中
烧杯外壁发烫
浓硫酸溶于水放出热量
朗读下列句子,句中停顿划分不正确的一项是( )
椅子下面有一个足球。
____ ____ a football ____ the desk.