13. What was the purpose of Goldman’s invention?　

12. The underlined words “chrome-plate contraptions” in Paragraph 1 refer to (所指)　 　　　　　.

11. What does the article mainly tell us?

54. Spencer drinks coffee after supper every day. He has used up his coffee. Can you give him some advice on it?

53. Romeo is a mother of three children. Her children do not like eating breakfast. She is worried about it.

52. Powell and his family will go to London to spend their holiday. They do not have their own car, so they want to rent one.

51. Abraham will buy some beer for his birthday party next week. He does not know what he can choose from many types of beer.

49. Which of the following is mainly discussed in the last paragraph?

A. Types of books.　　　　　　　　　 　　B. Kinds of dictionaries.

C. Lists of history books.　　　　　　 　　 　D. Collections of stories.