阅读理解。 This story is about a young man. He worked very hard at his lessons. He was too busy to have a rest. At last, he couldn't go to sleep. Every night, when he went to bed, he closed his eyes and tried to sleep. But the more he tried, the more he stayed awake. After a while he decided to visit the doctor. 'I just can't go to sleep at night. What should I do?' 'I have a suggestion,' said the doctor. 'Try counting numbers. By the time you reach one thousand, you'll be asleep. I am sure of it.' The nest day the man reached to the doctor's office. 'Well,' said the doctor, 'how are you today? Did you try my suggestion?' The man still looked tired. 'Yes,' he said, 'I tried counting one, two, three… 1. The young man couldn't go to sleep because _______. A. he hadn't finished doing his lessons. B. he had worked too hard and became ill. C. he was worked about his homework D. there was a lot of noise there and he couldn't have a good rest. 2. The doctor asked the young man _______. A. to count numbers before he went to bed B. to put all numbers from 1 to 1000 together C. to count numb ers while he was lying in bed D. to take some medicine and go to earli er. 3. The young man returned to the doctor's office the next day because _______. A. he wanted to thank the doctor B. he was better and wanted some more medicine C. he wanted to ask the doctor how to count the numbers D. he still couldn't go to sleep at night 4. The young man _______. A. counted from 569 to 1000 B. counted from 1 to 569 and fell asleep C. counted from 1 to 569 and got up to drink some tea D. counted from 1 to 1000 and fell asleep 5. The young man in fact ______ _. A. didn't und e rstand the doctor's suggestion B. was not able to count numbers C. didn't try the doctor's suggestion D. wasn't ill at all