A Municipal Report(Adapted from a story by O．Henry)(Ⅱ)
Azalea Adair herself opened the door when I knocked．She was about 50 years old．Her white hair was pulled back from her small，tired face．She wore a pale yellow dress．It was old，but very clean．
Azalea Adair led me into her living room．A damaged table，three chairs and an old red sofa were in the center of the floor．
Azalea Adair and I sat down at the table and began to talk．I told her about the magazine's offer an she told me about herself．She was from an old southern family．Her father had been a judge．
Azalea Adair told me she had never traveled or even attended school．Her parents taught her at home with private teachers．We finished our meeting．I promised to return with the agreement the next day, and rose to leave．
At that moment，someone knocked at the back door．Azalea Adair whispered a soft apology and went to answer the caller．She came back a minute later with bright eyes and pink cheeks．She looked ten year younger．“You must have a cup of tea before you go，”she said．She shook a little bell on the table，and small black girl about twelve years old ran into the room．
Azalea Adair opened a tiny old purse and took out a dollar bill．It had been fixed with a piece of blue paper and the upper right hand comer was missing．It was the dollar I had given to Uncle Caesar．“Go to Mr．Baker's store，Impy ,”she said，“and get me 25 cents' worth of tea and ten cents' worth of sugar cakes． And please hurry．”
The child ran out of the room．We heard the back door close．Then the girl screamed．Her cry mixed with a man's angry voice．Azalea Adair stood up．Her face showed no emotion as she left the room．I heard the man's rough voice and her gentle one．Then a door slammed and she came back into the room．“I am sorry，but I won't be able to offer you any tea after all，” she said．“It seems that Mr．Baker has no more tea．Perhaps he will find some for our visit tomorrow．”
We said good-bye．I went back to my hotel．
Just before dinner, Major Wentworth Caswell found me．It was impossible to avoid him．He insisted on buying me a drink and pulled two one-dollar bills from his pocket．Again I saw a torn dollar fixed with blue paper, with a corner missing．It was the one I gave Uncle Caesar．How strange，I thought． I wondered how Caswell got it．
63．We can judge from her behavior that Miss Adair was ．
A．polite and elegant B．confident and determined
C．poor and miserable D．capable and hardworking
64．Adair seemed after coming back from the back door．
A．as calm as before B．sadder C．excited D．surprised
65．The angry man with a rough voice outside might be ．
A．Uncle Caesar B．Mr．Baker C．Caswell D．A stranger
66．When the narrator saw Caswell again at his hotel，he was surprised ．
A．that Caswell should find him
B．that Caswell insisted on buying him a drink
C．that Caswell pulled two one-dollar bills from his pocket
D．to find Caswell had the torn dollar bill with a comer missing
[单位为L/(s·hm2)]，径流系数为0.4，FA=20ha2，汇流时间tA=15min，FB=30ha2，汇流时间tB=25min。由A至B点的流行时间tA-B=10min。则B点最大设计流量为（）L/s。