第二节阅读理解（共20小题；每小题2分，满分40分）
阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
In the days when an ice cream sundae cost much less, a 10-year-old entered a hotel coffee shop and sat at a table. A waitress put a glass of water in front of him. “How much is an ice cream sundae?” “Fifty cents,” replied the waitress. The little boy pulled his hand out of his pocket and studied a number of coins in it. “How much is a dish of plain ice cream?” he required. Some people were now waiting for a table and the waitress was a bit impatient. “Thirty-five cents,” she said rudely. The little boy again counted the coins. “I’ll have the plain ice cream,” he said. The waitress brought the ice cream, put the bill on the table and walked away. The boy finished the ice cream, paid the bill and departed. When the waitress came back, she began wiping down the table and then swallowed hard at what she saw. There, nearly beside the empty dish, were seven five-cent coins and fifteen one-cent coins---her tip.
36. How much money did the boy probably have in his pocket?
A. No more than fifty cents.      B. More than fifty cents.
C. Not more than fifty cents.    D. Less than fifty cents.
37. Why did the little boy have only a dish of plain ice cream?
A. The plain ice cream cost him much less.
B. He enjoyed the cheaper ice cream better.
C. The coins were not enough for an ice cream sundae.
D. He wanted to save some coins to tip the waitress.
38. We can infer that the waitress might have felt_______when she got the tip.
A. very surprised          B. a bit of shame           C. quite pleased                D. a little worried