题目内容
【题目】【改编】Our body clock，or natural body rhythm，influences our energy and alertness．Paying attention to it can help us choose the suitable time of day when we best perform specific tasks．
The reality，however，is that most of us organize their time around work demands，school deadlines，commuting or social events．Doing whatever your body feels like doing is a luxury in today's fast-paced modem society．
But that doesn't mean it isn't worth trying．Obeying our body clock has significant health benefits．Disrupting our natural body rhythm，on the other hand，has been linked to problems such as depression，obesity，or headache，says Steve Key，a biology professor．
When the body clock can synchronize（使……同步）the rhythms of its natural processes，it “gives us an advantage in daily life”，says Key．
According to him，when it comes to cognitive（认知的）work，most adults perform best in the late morning．As our body temperature starts to rise just before awakening in the morning and continues to increase until midday，our memory，alertness and concentration gradually improve．
However，he adds，our ability to concentrate typically starts to decrease soon thereafter．Most of us are more easily distracted between noon and 4 pm．
Alertness also tends to fall after eating a meal and sleepiness tends to peak around 2 pm，making that a good time for a nap．
Surprisingly, tiredness may increase our creative powers．For most adults，problems that require open ended thinking are often best dealt with in the evening when they are tired， according to a study in the journal Thinking & Reasoning．
When choosing a time of day to exercise，paying attention to your body clock can improve results．Physical performance is usually best from about 3 to 6 pm，says Michael Smolensky，a professor of biomedical engineering．
Of course, not everyone's body clock is the same，making it even harder to synchronize natural rhythms with daily plans．
【1】What does the writer mainly tell us in the passage?
A. The benefit of natural body rhythm.
B. A new research about our body clock.
C. Something about natural body rhythm.
D. The definition of natural body rhythm.
【2】What is the meaning of the underlined word “disrupting”?
A. Following. B. Destroying.
C. Noticing. D. Finding.
【3】According to the passage, we can know _____.
A. people don’t know tiredness can increase creative powers.
B. people are most focused at 3 o’clock..
C. natural body rhythm can’ t influences people’s energy.
D. most grown-ups perform best in the early morning
【4】Which of the following is true ?
A. Our memory and concentration improve with the fall of body temperature.
B. A good time for a nap is usually at 1pm.
C. Physical performance is usually best in the morning.
D. Not all people have the same body clock.
【5】The benefit of knowing our natural body rhythm is that_____.
A. we can keep healthy all our life.
B. we can improve our IQ.
C. we can do specific tasks in suitable time.
D. we can do whatever our body wants to.
【答案】
【1】C
【2】B
【3】A
【4】D
【5】C
【解析】
试题分析: 人体生物钟的存在对我们来说有着极重要的意义，如果外界环境变化干扰了时钟的正常运转，造成了人体器官内部节奏的紊乱，会引起某些疾病；而如果能够合理利用生物钟的规律人们就能高效地完成某些任务。
【1】C。主旨大意题。文章开头提出人们要注意人体的生物钟以便能更好的选对我们做某些特殊工作的最佳时间，然后在下文对此进行详细讲述，由此判断文章中心内容就是关于生物钟的，故选C。
【2】B词义猜测题。从上文内容可知注意人体的生物钟并按照规律去做事会对健康有益，而后句内容则说明的是人体会出现的问题，由此推断不遵从人体生物钟则会出现很多健康问题，故判断该词意为“破坏，扰乱”，选B。
【3】A细节理解题。从第八段Surprisingly, tiredness may increase our creative powers可知选A。根据首段natural body rhythm influences our energy and alertness可知C选项错误；根据第六段Most of us are more easily distracted between noon and 4 pm可知B选项错误；从第五段most adults perform best in the late morning判断D选项错误。
【4】D细节理解题。根据文章末段not everyone's body clock is the same可知不是每个人的生物钟都一样，故选D。根据第五段As our body temperature starts to rise just before awakening in the morning and continues to increase until midday，our memory，alertness and concentration gradually improve可知人体记忆力和注意力是随着体温的上升而增强，故A选项错误。而根据第七段sleepiness tends to peak around 2 pm，making that a good time for a nap判断B选项错误。根据倒数第二段Physical performance is usually best from about 3 to 6 pm判断C选项错误。
【5】 C细节理解题。从文章首段Paying attention to it can help us choose the suitable time of day when we best perform specific tasks可知答案选C。
