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 became ill, so 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'm sure of it.' The next day the man returned 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…up to one thousand. But when I reached five hundred and sixty-nine, I began to feel sleepy. I had to get up and drink some tea so that I could go on counting up to one thousand. But then I still couldn't fall asleep.' 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 worried 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 numbers while he was lying in bed D. to take some medicine and go to bed earlier 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 num bers 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 understand 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