You should choose the best answer Passage 1 Questions 41 to 45 are based on the following passage. In 99 cases out of 100, insomnia(失眠)is caused by a disturbance of the natural sleep rhythm. The reasons why the rhythm has been disturbed are many and they range from drugs that are being taken to treat a separate medical condition to anxiety. A sudden change in lifestyle or climate could do it, or just that you've fallen into the habit of dozing off in front of the television. Certainly the body must have enough sleep. Tests that deprived people of sleep have proved lack of it can cause fairly rapid physical and mental deterioration(恶化). But on the other hand, it docsn't need too much. So if you're sleeping in front of the TV, you won't sleep soundly at night. Similarly, if you're holidaying in Spain, and spending your days sleeping on the beach, chances are that you'll be wide awake at bedtime. Of course, the problem for my summer insomniacs is that, despite a strong urge to put their heads down on their desks in the afternoons, they aren't getting any extra sleep to compensate for their wakeful nights. For the worst sufferers I sometimes prescribe a mild sleeping pill which, after a few nights, reestablishes the body's natural sleep rhythm, conditioning it to accept the heat. 41.From the passage, insomnia results from_

A,B,Cand D. You should choose the best answer Passage 1 Questions 41 to 45 are based on the following passage. In 99 cases out of 100, insomnia(失眠)is caused by a disturbance of the natural sleep rhythm. The reasons why the rhythm has been disturbed are many and they range from drugs that are being taken to treat a separate medical condition to anxiety. A sudden change in lifestyle or climate could do it, or just that you've fallen into the habit of dozing off in front of the television. Certainly the body must have enough sleep. Tests that deprived people of sleep have proved lack of it can cause fairly rapid physical and mental deterioration(恶化). But on the other hand, it docsn't need too much. So if you're sleeping in front of the TV, you won't sleep soundly at night. Similarly, if you're holidaying in Spain, and spending your days sleeping on the beach, chances are that you'll be wide awake at bedtime. Of course, the problem for my summer insomniacs is that, despite a strong urge to put their heads down on their desks in the afternoons, they aren't getting any extra sleep to compensate for their wakeful nights. For the worst sufferers I sometimes prescribe a mild sleeping pill which, after a few nights, reestablishes the body's natural sleep rhythm, conditioning it to accept the heat. 41.From the passage, insomnia results from_ A. the interrupting of the ordinary sleep pattern B. Being unable to sleep C. keeping awake at night D. drugs to treat a special disease 42. Lack of sleep will lead to A. a sudden change in lifestyle B.a good condition in body C. the habit of being sleep in front of the television D.aquick drop in both body and mind condition 43.A mild sleeping pill can help a person well A. spend time sleeping B. Recover their normal sleep C. keep awake at night D. Compensate for their missing sleep 44.The problem for the author's summer insomniacs is that they A. can't make up for the sleepless nights B. Sleep in the afternoons C.can have extra sleep at night D.can never sleep well 45.It can be inferred that the writeris a A. singer B. SuffererC. Doctor D. Tourist 页 共 4 页