2010年12月大学英语四级词汇活学活用(21)

[导读]在备考四级考试的过程中，大家普遍感觉比较困难的问题就是背单词，单词背的好坏直接决定着考试成绩的高低。为了帮助考生有效记忆单词，和谐英语学习网整理了以下资料，供考生复习。

　　完型填空练习:
　　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 __1__ you to be in your lightest phase of sleep __2__ rousing you. Its makers say that should __3__ you wake up feeling refreshed every morning.
　　As you sleep you pass __4__ a sequence of sleep states—light sleep, deep sleep and REM (rapid eye movement) sleep—that __5__ approximately every 90 minutes. The point in that cycle at which you wake can __6__ how you feel later, and may __7__ have a greater impact than how much or little you have slept. Being roused during a light phase __8__ you are more likely to wake up energetic.
　　SleepSmart __9__ the distinct pattern of brain waves __10__ during each phase of sleep, via a headband equipped __11__ electrodes (电极) and a microprocessor. This measures the electrical activity of the wearer’s brain, in much the __12__ way as some machines used for medical and research __13__, and communicates wirelessly with a clock unit near the bed. You __14__ the clock with the latest time at __15__ you want to be wakened, and it __16__ duly (适时地) wakes you during the last light sleep phase before that.
　　The __17__ was invented by a group of students at Brown University in Rhode Island __18__ a friend complained of waking up tired and performing poorly on a test. “__19__ sleep-deprived people ourselves, we started thinking of __20__ 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.
　　1. A) beside B) near C) for D) around
　　2. A) upon B) before C) towards D) till
　　3. A) ensure B) assure C) require D) request
　　4.A) through B) into C) about D) on
　　5.A) reveals B) reverses C) resumes D) repeats
　　6.A) effect B) affect C) reflect D) perfect
　　7.A) already B) ever C) never D) even
　　8.A) means B) marks C) says D) dictates
　　9.A) removes B) relieves C) records D) recalls
　　10.A) proceeded B) produced C) pronounced D) progressed
　　11.A) by B) of C) with D) over
　　12.A) familiar B) similar C) identical D) same
　　13.A) findings B) prospects C) proposals D) purposes
　　14.A) prompt B) program C) plug D) plan
　　15.A) where B) this C) which D) that
　　16.A) then B) also C) almost D) yet
　　17.A) claim B) conclusionC) concept D) explanation
　　18.A) once B) after C) since D) while
　　19.A) Besides B) Despite C) To D) As
　　20.A) what B) how C) whether D) when
　　翻译练习:
　　1,The finding of this study failed to.____________________(将人们的睡眠质量考虑在内)
　　2,The prevention and treatment of AIDS is____________________(我们可以合作的领域)
　　3,Because of the leg injury, the athlete____________________(决定退出比赛)
　　4,To make donations or for more information, please____________________(按以下地址和我们联系)
　　5,Please come here at ten tomorrow morning____________________(如果你方便的话)
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