单选题
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 (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)f 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.
单选题
A. beside B. near C. for D. around
【正确答案】
C
【答案解析】[解析] 固定搭配。wait为不及物动词,wait for是固定搭配,意为“等待”,wait for sb.to do sth.意为“等待某人做某事”。
【答案解析】[解析] 动词辨析。只有repeat能够更好地贴合句意,“这些睡眠阶段每90分钟重复一次”,而且后面一句in that cycle也暗示前面提及的现象是一个循环过程,故D项为正确答案。reveal意为“揭示,显示”,reverse意为“反转,颠倒”,resume意为“(中断后)重新开始,恢复”。
单选题
A. effect B. affect C. reflect D. perfect
【正确答案】
B
【答案解析】[解析] 动词辨析。本句中,______how you feel later 和have a greater impact是并列的谓语成分,因此所选的动词应该和impact具有相近的意思,B项affect:意为“影响”,符合语境,为正确答案。effect作动词时表示“实现,使生效”,reflect意为“反映,反射”,perfect作动词时表示“使完美”,均不符合题意。
单选题
A. already B. ever C. never D. even
【正确答案】
D
【答案解析】[解析] 上下文逻辑。经过对______ how you feel later和and may ______have a greater impact than...的综合分析,尤其是have a greater impact than...可知,后者程度进一步递增,D项even“甚至”表示递进,符合语境,为正确答案。