物质的量浓度相同的下列溶液,pH由大到小排列正确的是( )
A:Ba(OH)2、Na2SO3、FeCl3、KCl
B:Na2SiO3、Na2CO3、KNO3、NH4Cl
C:NH3·H2O、H3PO4、Na2SO4、H2SO4
D:NaHCO3、C6H5COOH、C2H5OH、HCl
这个星期天正好是父亲的生日,可父母由于工作忙忘了,我会为他们送去一份小生日礼物。( )
My name is Cindy. I am a girl. I am ten years old. I am a pupil. I'm tall and fat. I have two good friends. Celia is tall and thin. She's shy. But sometimes she's very funny. Tina has short hair.
She is helpful. Miss Liu is our Chinese teacher. She is clever and beautiful. She teaches well. We all like her Chinese class.
下列各式中,正确的是( )