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Do you wake up every day feeling too tired, or even upset? If so, then a new alarm clock could be just for you. The clock, c
Do you wake up every day feeling too tired, or even upset? If so, then a new alarm clock could be just for you. The clock, c
admin
2013-03-11
34
问题
Do you wake up every day feeling too tired, or even upset? If so, then a new alarm clock could be just for you.
The clock, called SleepSmart, measures your sleep cycle, and waits【C1】______you to be in your lightest phase of sleep【C2】______rousing you. Its makers say that should【C3】______you wake up feeling refreshed every morning.
As you sleep you pass【C4】______a sequence or sleep states--light sleep, deep sleep and REM(rapid eye movement)sleep--that【C5】______approximately every 90 minutes. The point in that cycle at which you wake can【C6】______how you feel later, and may【C7】______have a greater impact than how much or little you have slept. Being roused during a light phase【C8】______you are more likely to wake up energetic.
SleepSmart【C9】______the distinct pattern of brain waves【C10】______during each phase of sleep, via a headband equipped【C11】______electrodes(极)and a microprocessor. This measures the electrical activity of the wearer’s brain, in much the【C12】______way as some machines used for medical and research【C13】______, and communicates wirelessly with a clock unit near the bed. You【C14】______the clock with the latest time at【C15】______you want to be wakened, and it【C16】______duly(适时地)wakes you during the last light sleep phase before that.
The【C17】______was invented by a group of students at Brown University in Rhode Island【C18】______a friend complained of waking up tired and performing poorly on a test."【C19】______sleep-deprived people ourselves, we started thinking of【C20】______to do about it," says Eric Shashoua, a recent college graduate and now chief executive officer of Axon Sleep Research Laboratories, a company created by the students to develop their idea.
【C15】
选项
A、where
B、this
C、which
D、that
答案
C
解析
结构衔接。介词后面定语从句的关系代词,只能用“which”。
转载请注明原文地址:https://kaotiyun.com/show/pnr7777K
0
大学英语四级
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