某校积极加大校园文化建设的力度,提高校园文化的品位,把学校办成“文化的大观园”,营造出一个和谐的校园文化氛围。该校之所以这样做,原因在于( )
①文化对人的影响来自于特定的文化环境
②文化对人的影响是自觉主动的
③文化氛围影响人的思想和行为
④文化活动促进文化理论的创新
A:①③
B:②④
C:③④
D:②③
A. Why do you like spring best?
B. What will you do for her birthday?
C. Which season do do you like best?
A: Hello. Can l ask you some questions,please?
B: Sure.
A: ____
B: I like spring best.
A:____
B: Because my mother's birthday is in spring.
B: I'll make a card for her.
弱酸
H2SO3
HClO
H2CO3
Ka1
1.54×10﹣2
2.95×10﹣8
4.30×10﹣7
Ka2
1.02×10﹣7
﹣
5.61×10﹣11