Sleeping too little or for too long ages the brain by up to seven years. Getting less or more than the six to eight hours can ca

admin2013-07-11  30

问题     Sleeping too little or for too long ages the brain by up to seven years. Getting less or more than the six to eight hours can cause health【C1】______and ultimately lead to an early death.
    Seven hours will keep the brain in【C2】______condition, said scientists at the University of London Medical School, who said a(n) 【C3】______of sleep affects reasoning and vocabulary. They found "the magnitude(大小)of the effect is【C4】______to four to seven years of ageing".
    Researchers said changes over a five-year period in late middle-age affect the function of the brain. Between 7 and 8 per cent of those who slept longer than the【C5】______amount fared worse in cognitive tests. But a quarter of women and one in six men who【C6】______to get a night’s good sleep suffered a(n) 【C7】______in reasoning, vocabulary and cognitive tests.
    The negative effects of too much,【C8】______and poor quality sleep on various aspects of【C9】______and physical health have begun to receive more attention. "【C10】______that society increasingly affects our lives, it is important to consider what effects changes in sleep duration may【C11】______on health and how long we live."
    Researchers found the【C12】______amount of sleep duration of seven hours per night【C13】______the highest score for every test.【C14】______proper amount of sleep, people will be【C15】______of working and studying more efficiently.【C16】______people will become less productive. At the same time their ability to【C17】______is affected and the memory is not as【C18】______. They may find themselves less patient and【C19】______. All of these consequences will【C20】______affect their social interaction and decision-making ability.
【C9】

选项 A、mental
B、dental
C、legal
D、social

答案A

解析 考查形容词辨析。空格后的and表并列关系,则这里应填一个与physical“身体的”相对应的词,而且要能与health搭配,所以mental为最佳答案。dental“牙齿的”;legal“法律的,合法的”;social“社会的”。
转载请注明原文地址:https://kaotiyun.com/show/FD07777K
0

最新回复(0)