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At the beginning of last century, medical scientists made an interesting disc
At the beginning of last century, medical scientists made an interesting disc
游客
2025-03-04
9
管理
问题
At the beginning of last century, medical scientists made an interesting discovery: we are built not just of flesh and blood but also of time. They were【C1】______to show that we all have "a body clock" inside us, which controls the【C2】______and fall of our body energies, making us different from one day to the next.
The【C3】______of "a body clock" should not be too surprising since the lives of most living things are controlled【C4】______the 24 hour night-and-day cycle. We feel tired and fall asleep at night and become【C5】______and energetic during the day. If the 24 hour-cycle is disturbed, most people experience unpleasant【C6】______For example, people who are not used to working at night can find that【C7】______of sleep cause them to perform badly at work.
【C8】______the daily cycle of sleeping and waking, we also have other cycles which【C9】______longer than one day. Most of us would agree that we feel good on some days and not so good on【C10】______: sometimes our ideas seem to flow and at other times, they just do not exist. [br] 【C7】
选项
A、miss
B、none
C、lack
D、need
答案
C
解析
本题考查词义辨析和对上下文的理解。lack此处为名词,在从句中做主语。lack of…,缺乏……。
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