题目内容
（请给出正确答案）
A.circles
B.cycles
C.circulation
D.recurrence
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更多“【C3】A．circlesB．cyclesC．circulationD．recurrence”相关的问题
A．The car industry will be benefited most and will be more profitable.
B．The congress will play less important role in regulating emissions.
C．The 40-year-old law—the Clean Air Act will be abolished.
D．The dispute whether CO2 was an air pollutant will be settled.
The cause of sleepwalking in children is usually unknown【C4】______ may be related to fatigue, 【C5】______ sleep loss, or anxiety. Sleepwalking in adults can be associated with mental disorders, reactions to drugs and alcohol, or disease such as seizures: In the elderly, sleepwalking may be a 【C6】______ of an organic brain syndrome(综合病症) or REM behavior. disorders.
The sleepwalking activity may include simply sitting 【C7】______ and appearing to be awake【C8】______ actually being asleep, getting up and walking around, or【C9】______ activities such as【C10】______ furniture, going to the bathroom, dressing and undressing, and similar activities. Some people even drive a car while actually asleep. The【C11】______ can be very brief or can last for 30 minutes or longer.
One common misconception is that a sleepwalker should not be awaken. It is not dangerous to awaken a sleepwalker,【C12】______ the person may be【C13】______ or disoriented for a short time on awakening. Another misconception is that a person cannot be【C14】______ when sleepwalking. Actually, injuries caused by such things as tripping and loss of balance are common for sleepwalkers. Sleepwalking affects【C15】______ 1% to 17% of children and is more frequently seen in boys. The【C16】______ of sleepwalking decreases with age.
What causes sleepwalking is not known. Sleepwalking【C17】______ no serious health threat to those who experience it, although the risk of injury is a 【C18】______ of concern. Currently, there is nonspecific medical evidence that suggests that there may be psychiatric issues involved in sleepwalking and it is not【C19】______ or treated as a mental illness. Future research may【C20】______ the development of a medical-legal definition of sleepwalking.
【C1】
A．physically
B．unconsciously
C．seemingly
D．mentally
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