Mr. and Mrs. White had two sons and three daughters. One Sunday, Mrs. White said to her husband. The children don' t have any lessons today, and you're free too. There's a new funfair（游乐场） in the park. Let's all go there to play.
Her husband said, "I want to finish some work today." "Oh, I forget it. Go there and make our children happy. That's the most important work." Mrs. White said.
So Mr. and Mrs. White took their children to the funfair. Mr. White was forty-five years old but he enjoyed the funfair more than his children. He hurried from one thing to another, and ate lots of sweets. One of the children said to her mother, "Dad is just like a small child, isn't he, Mom?" Mrs. White didn't want to follow her husband around any more at that time and answered, "He is even worse than a small child, Mary, because he might spend（花费）more money than a small child."
小题1: There were children in the White family.
A．two
B．three
C．four
D．five小题2: One Sunday, Mr. and Mrs. White wanted to go to with their children.
A．school
B．work
C．a funfair
D．a shop小题3:Mr. White liked the place so much that he .
A．bought lots of sweets
B．followed his wife all the time
C．hurried from one thing to another
D．asked a lot of questions小题4:From the story we know Mrs. White when Mary asked her the question.
A．was still excited to play
B．was a little angry with Mr. White
C．looked for Mr. White everywhere
D．ate a lot of sweets小题5: Of all his family members, enjoyed playing there most that Sunday.
A．Mr. White
B．Mrs. White
C．Mary
D．the boys
HCO3-+H+的平衡常数 K=____。（已知：10-5.6=2.5×10-6）