完形填空 阅读理解培优训练(附解析)（word）一、完形填空1．完形填空 At the beginning of this century, medical scientists made a interesting discovery（发现）
We are bulk not just of flesh （肉）and blood but also of time
They were 1 to show that we all have a body clock inside 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
We feel 5 and fall asleep at night and become 6 and energetic during the day
Most people will have a bad feeling 24-hour cycle is 7
For example, people who are not used to working at night can find that luck （缺少）of sleep causes them to 8 badly at work
Besides （除了） the daily cycle of sleeping and waking, we 9 have
