完形填空 先通读下面的短文，掌握其大意，然后在所给选项中，选出最佳选项。
At the beginning of this century, medical scientists made an interesting discovery: we are built not just of flesh (肌肉) and blood but also of time. They were able to show that we all have a ‘body clock’ 1 us, which controls the 2 and fall of our body energies. It can 3 us different from one day to the next.
The idea of a ‘body clock’ should not be too 4 because the lives of most living things are controlled by the 24-hour night-and-day cycle (循环). We feel 5 and fall asleep at night. We bee 6 and energetic during the day. Most people will have a bad feeling if the 24-hour cycle is 7 . For example, people who are not used to working at night can find that lack (缺少) of sleep causes them to 8 badly at work.
9 the daily cycle of sleeping and waking, we also have other cycle which lasts longer than one day. Most of us would 10 that we feel good on some days and not so good on others; sometimes our ideas seem to be so active and at other times, they are not.
【小题1】A．besideB．inside C．outside D．under【小题2】A．lifeB．offer C．use D．rise【小题3】A．show B．treatC．make D．change【小题4】A．difficult B．naturalC．surprising D．frightening【小题5】A．quiet B．tired C．fortable D．cheerful【小题6】A．regular B．serious C．lively D．clear【小题7】A．disturbed B．pushed C．restarted D．troubled【小题8】A．perform B．suffer C．count D．control【小题9】A．With B．As well as C．Except D．Rather than【小题10】A．afford B．admire C．advise D．agreeB
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(答案→)B
解析：这篇短文重点描述了我们身体里面的生物钟，以此告诉我们保持工作于休息平衡的重要性。
【小题1】介词辨析。A.在……旁边；B.在……里边；C.在……外边；D. 在……下面。结合语境可知此处指的是生物钟在身体里边，故选B。
【小题2】联系下文and fall of our body ，可知此处指的是控制我们身体能量的升降，故选D，升起。
【小题3】动词辨析。A. 显示；B.对待；C. 使得，让；D. 改变。结合语境可知他能使我们今天和明天有所不同。故选C。
【小题4】形容词辨析。A. 困难的；B. 自然的；C.令人吃惊的；D.吓人的；联系下文描述，可知此处指的是关于生物钟的思想不应该太令人吃惊，故选C。
【小题5】联系下文描述，可知此处指的是我们感到劳累，故选B，劳累的。
【小题6】联系下文描述，可知此处指的是我们在白天变得充满活力，故选C，生动的，充满活力的。
【小题7】联系下文描述，可知此处指的是生物钟受到妨碍，打乱。故选A，扰乱。
【小题8】动词辨析。A. 执行，完成；B. 经受，遭受；C. 计算，认为；D. 控制。联系下文可知指的是工作完成的很差。故选A。
【小题9】连词辨析。A. 带有，伴随；B. 和……一样；C. 除了；D. 而不是，宁可……也不愿。联系下文可知此处指的是和睡眠与醒来的周期一样，我们也有持续超过一天的其它周期。故选B。
【小题10】动词辨析。A.提供，买得起；B.钦佩，赞美；C.建议；D. 同意，承认。联系上下文可知句意为：我们大部分人必须得承认，我们有时候感觉好点，其它时间感觉差点。故选D。