阅读理解 The breathless pace of everyday life made many people sleepless, said our reporter Wang Ling, when talking about the World Sleep Day (WSD)with sleep experts in order to find out how to get a better sleep. Cui Shuliang, founder of 51 sleep . com , which provides online advice for those yearning for a sound sleep, found many of his workmates suffering badly from poor sleep quality, as an IT technician in earlier times. 'Each morning, I would hear complaints from someone that kept waking up during the night, or someone else who had to spend all night fighting for sleep.' Pressed by busy city life, more and more people are suffering from sleep problems ranging from insomnia to narcolepsy (嗜眠症). Some people may be able to fall asleep, but spend the whole time in fear. A survey conducted by the Sleep Research Society (SRS) shows that about 40% of the population is troubled by sleep disorders, which can result in lowered awareness and less productive days. Serious insomnia can even lead to psychiatric problems. Professor Zhang Xi, director of the organization, says the focus of this year's World Sleep Day will be on scientific ways to sleep. Professor Zhang Xi explained that the causes of sleep disorders differ among cases, but more than 80% of his patients had trouble in sleeping because they always have a nervous worried feeling that makes it impossible for them to relax. 'That's why we keep suggesting people pay more attention to sleep problems, since there remains a hidden danger in the physical and mental condition. On the other hand, people with sleep problems should learn how to ease their mind and relax themselves. Staying mentally and physically healthy, plus having healthy habits, is the best way to realize a sound sleep.' 1. What do we know about Cui Shuliang according to the text? A. He founded a website with the help of his friends. B. He is experienced in using information technology. C. He was suffering from serious sleep problems. D. He often complained about being sleepy. 2. What can be inferred from the text? A. Most people cannot have a good sleep. B. Most sleep problems are caused by fear. C. Sleep disorders can lead to serious results. D. The SRS is an organization of 51 sleep . com . 3. According to Professor Zhang Xi,we know that ________. A. the WSD's focus is on the importance of sleep this year B. people have paid enough attention to sleep problems C. keeping in good health is necessary for a good sleep D. different sleep problems have the same cause 4. Most of Professor Zhang Xi's patients have difficulty in sleeping because of ________. A. stress B. excitement C. noise D. fear 5. The underlined word 'sound'in the second paragraph means'________'. A. light and long B. quick and dreamful C. heavy and short D. deep and peaceful