25℃时,在饱和氯水中存在平衡:Cl2+H2OH++Cl-+HClO。下列叙述中错误的是
A.在饱和氯水中通入H2S气体,溶液的pH变小 |
B.在饱和氯水中通入SO2气体,溶液的pH变小 |
C.在饱和氯水中加入CaCO3,平衡向右移,溶液的pH变大 |
D.在饱和氯水中加入NaOH使pH=7,所得溶液中微粒浓度:c(Na+)>c(ClO-)>c(Cl-)>c(HClO) |
最早系统阐述中医临床医学的著作是( )
A.《黄帝内经》 | B.《伤寒杂病论》 | C.《神农本草经》 | D.《本草纲目》 |
有西方学者认为:“近代世界赖以建立的种种发明与发现可能有一半来源于中国”。传入欧洲并对“近代世界”的到来产生了重大影响的中国科技成就是( )
A.地动仪 | B.造纸术 | C.雕版印刷术 | D.罗盘针 |
I can’t leave. She told me that I ______ stay here until she comes back.
A.can | B.must | C.will | D.may |
—— Do you mind my opening the window? It’s a bit hot in here. —— ______ , as a matter of fact
A.Go ahead | B.Yes, my pleasure![]() |
C.Yes, I do | D.Come on |
It’s high time you had your hair cut ; it’s getting _______ .
A.too much long | B.much too long ![]() |
C.long too much | D.too long much |