John Smith was a writer, who wrote detective stories for magazines, though he never dealt with criminals（罪犯）. One evening he could not finish an end for a story. He sat in his study（书房）, but he had no ideas. So he decided to go to the cinema.
When he came back, he found that he had had a visitor. Someone had broken into his house. The visitor had had a drink, smoked several of his cigarettes and had read his story. The visitor left him a note.
“I have read your story and I don’t think it is very good. Please read my suggestions and you can finish it. By the way, I am a thief. I’m not going to steal anything tonight. But if you become a successful writer, I will return.”
John read the thief’s suggestions. Then he sat down and wrote the rest of the story. He is still not a successful writer, and he is waiting for his “visitor” to return. Before he goes out in the evening, he always leaves a half-finished story in his study.
56. Detective stories are stories about .
A. science B. children C. the future D. the police
57. John went to the cinema because .
A. he was too tired
B. he wanted to look for a thief
C. he could not finish his story and hoped to get some ideas
D. he wanted to enjoy himself in the cinema
58. The visitor came to John’s house in order to .
A. steal something B. read the story C. have a drink D. visit the writer
59 The visitor .
A. stayed in John’s house for a night B. took some of John’s things away
C. left John some advice 
D. was a good friend of John’s
60. John would like to .
A. have a talk with his visitor
B. get more ideas from the visitor
C. make friends with the visitor
D. catch the visitor and take him to the police
DCAC
Al(OH)3+3H+，在干燥的HCl气流中，抑制AlCl3的水解，且带走