推理是一种重要的化学思维方法,以下推理正确的是( )
A.碳酸盐与酸反应会放出气体,能与酸反应放出气体的物质不一定是碳酸盐
B.中和反应一定有盐和水生成,生成盐和水的反应一定是中和反应
C.二氧化碳能使燃着的木条熄灭,能使燃着木条熄灭的气体一定是二氧化碳
D.单质是由同种元素组成的,由同种元素组成的物质一定是单质
You ________ be able to control all the things that happen to you, but you can decide not to be reduced by them.( )
A.need notB.may notC.must notD.should not
You promised that you ________ me to Disneyland, Dad.
Well, I did, dear. But we have to change the plan.( )
A.will takeB.would takeC.has takenD.had taken
Think twice and make the decision. ________ else can do it for you.( )
A.SomebodyB.EverybodyC.AnybodyD.Nobody
________ are you looking for, madam? I think everyone is here.
I don't think so. Where's David?( )
A.WhoB.WhatC.WhenD.Where
Cheer up, son! You have friends here. You're not ________.( )
A.aloneB.awakeC.afraidD.asleep