完形填空 通读全文，掌握其大意，然后从各题所给的A、B、C三个选项中选出一个最佳答案。
There is a village in America, and in this village everyone is 31 . They all have beautiful houses and nice clothes. They are good at 32 .
One day a young lady came to the village. She talked with a man, “ Look! You are all good businessmen. What’s the 33 ?”
“The secret is that we eat a lot of fish.” answered the man, “The fish is good for our brains. It makes us 34 .”
“I see.” said the young lady, “ And what’s the name of the fish?”
“I don’t know, but if you give me 50 dollars, I can 35 you some. The young lady thought it was a good idea. Then she gave the man 50 dollars and told 36 her address. Soon the young lady got a box. In the box, there were three 37 .
After a month, the young lady 38 the businessman again. “Thank you for your fish.” she said, “ But listen! 50 dollars is very 39 for just three fish!”
“Ah, you see!” the businessman smiled, “ The fish is 40 to have an effect（效果）. You are becoming clever!”
31. A. poor B. rich C. serious
32. A. business B. dream C. culture
33. A. secret B. plan C. question
34. A. foolish B. bad C. clever
35. A. send B. lend C. invite
36. A. them B. him C. her
37. A. money B. box C. fish
38. A. met B. did C. forgot
39. A. cheap B. expensive C. important
40. A. stopping B. writing C. beginning