下列对初中化学知识的总结,错误的是( )
A.化学基本反应类型包括化合反应、分解反应、置换反应和复分解反应四种
B.六大基本营养素是蛋白质、糖类、油脂、维生素、无机盐和水
C.由同种元素组成的物质一定是纯净物
D.遇到火灾时,用湿毛巾捂住口鼻,匍匐逃离火灾现场
Hong Kong﹣Zhuhai﹣Macao Bridge, the world's longest sea﹣based project, brings people in those three cities within "one﹣hour living circle".( )
A.aB.anC.theD./
Could you tell me_______________?
Sure. Go down the street, you can find it at the second crossing!( )
A.where is the supermarket
B.where the supermarket is
C.when does the supermarket open
D.when the supermarket opens
I always feel nervous the night before the English test.
______________. I am sure you can make it.( )
A.Take it easy.
B.Good idea.
C.It sounds cool.
D.I'm glad to hear that.
Do you know the man ____________ spoke at the meeting just now?
No, I don't know.( )
A.whatB.whoC.whichD.whose
Mum, it's too hot. ________ I swim in the lake?
No, you ___________. That's too dangerous!( )
A.Should; can'tB.Need; mustn't
C.Must; needn'tD.Could; mustn't