阅读理解。 A blind boy sat on the steps of a building with a bosh by his feet. He held up a sign which read, "I am blind, please help." There were only a few coins in the box. The boy felt sad. A man walked by. He took a few coins from his pocket and dropped them into the box. Then he took the sign, turned it around and wrote some words. He put the sign back so that everyone who walked by would see the new words. Soon the box was full. A lot more people were giving money to the blind boy. That afternoon the man who had changed the sign came to see how things were. The boy recognized his footsteps (听出他的脚步声) and asked, "were you the one who changed my sign this morning? What did you write?" That man said, "I only wrote the truth. I said what you said but in a different way." What he had writtenwas, "today is a beautiful day and I can not see it." Do you think the first sign and the second sign were saying the same thing? Of course both signs told people they were so lucky that they were not blind. Great men say, "In the journey of life, if you want to travel without fear, you must have the ticket of a good conscience (良心)." It's a beautiful thing to see a people smiling! And it's even more beautiful to know that you are the reason of a person's smiling! 1. When did the man pass by and change the blind boy's sign? [ ] A. In the morningB. At noon C. In the afternoon D. At night 2. Why did the second sign have a better effect? [ ] A. It told the truth in a straight way. B. It told the passing people a lie. C. It told people to buy some tickets for the boy. D. It told people to feel lucky for not being blind. 3. What do the first three paragraphs tell us? [ ] A. No pains, no gains.B. Different ways, different results. C. The early bird catches the worm. D. When the cat's away, the mice will play. 4. According to the last paragraph, the most beautiful thing is _____. [ ] A. to know the reason of a person's smiling B. to see a person smiling C. to be the reason of a person's smiling D. to be a person smiling