41．According to the writer，the most serious aspect of insomnia is generally________．
　　A．the repeated occurrence of insomnia
　　B．the worry about less time for sleep
　　C．the difficulty in changing it
　　D．the tiredness from the insomnia
　　42．Which of the following might NOT cause insomnia according to the passage?
　　A．The over．softness of the mattress．
　　B．The darkness in the bedroom．
　　C．Eating just before going to bed．
　　D．Drinking tea before sleeping．
　　43．According to the passage，which of the following is NOT true about insomnia?
　　A．It is a kind of disease．
　　B．It might occur to any person．
　　C．It，may be easy to cure．
　　D．Simple factors can lead to insomnia．
　　44．The method mentioned above in treating insomnia is to________．
　　A．eat appropriate amount of food
　　B．take a walk before going to bed
　　C．change its causes directly
　　D．have more reading before sleeping
　　45．The sufferer of insomnia can relax themselves before sleeping in the following ways EXCEPT________．
　　A．reading books
　　B．watching some TV
　　C．changing sleeping habits
　　D．having a Waten bath