Do you wake up every day feeling too tired, or even upset? If so, then a new ala

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 SteepSmart, measures yoursleep cycle, and waits ____（36） youto be in your lightest phase of sleep ____（37）rousing you．Itsmakers say that should ______（38） youwake up feeling refreshed every morning．As you sleep you pass____（39） asequence of sleep states---light sleep, deep sleep and REM（rapid eye movement） sleep---that ____（40） approximately every 90 minutes．The point in that cycle atwhich you wake can ____（41） howyou feel later, and may ____（42） havea greater impact than how much or little you have slept．Being roused during a lightphase ____（43） you are more likely to wake upenergetic．

SleepSmart ____（44） the distinct pattern of brainwaves _____（45） during each phase of sleep,via a headband equipped _____（46）electrodes and a microprocessor．This measures the electrical activity of the wearer’s brain, in muchthe ____（47） way as some machines used formedical and research ____（48）, andcommunicates wirelessly with a clock unit near the bed．You ____（49） the clock with the latest timeat _____（50） you want to be wakened, and it_____（51） duly wakes you during the lastlight sleep phase before that．

The _____（52） was invented by a group of students at Brown University in RhodeIsland ____（53） a friend complained of wakingup tired and performing poorly on a test．“_____（54） sleep-deprived peopleourselves, we started thinking of _____（55） todo about it．” SaysEric Shashoua, a recent college graduate and now chief executive officer ofAxon Sleep Research Laboratories, a company created by students to developtheir idea．

试题答案

【答案】

1.C

2.B

3.A

4.A

5.D

6.B

7.D

8.A

9.C

10.B

11.C

12.D

13.D

14.B

15.C

16.A

17.C

18.B

19.D

20.A

【解析】略