首字母填空（本大题共6分，每小题0.5分）
A man had two sons. They were twins. They were born at a     the same time and looked quite alike. But in one important way, they were very d     .One of them was an optimist(乐观主义者), while the o    was a pessimist(悲观主义者). The man was w    about his sons. He didn’t want his sons to be too pessimistic or too optimistic. He told his best friend Johnson about this p    . Johnson was a man of many i      . Then he asked, “W     is their next birthday?” The father replied, “It’s on Wednesday. They will be twelve years old.” “Good,” Johnson said. “Here’s what you should do. Give your pessimistic son a really n    present. Give your optimistic son a really poor present. That will work!”
The father did as his friend t      him. On Wednesday morning, the two boys got their birthday p     . The pessimist looked at his first. It was a very e      old watch, but he was not pleased with it. He said, “I don’t like this very much. I am sure it won’t keep good time. It will always be fast or s      , and it will probably break easily. Then I have to spend lots of money repairing it.” Then the optimist looked at his present. He was really pleased “Look! Dad has given me shoelaces(鞋带),” he said. He held up the shoelaces and said, “I can use it when I have new shoes.”