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 Sleep Smart, 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 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 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

单选题 A. upon B. before C. towards D. till

单选题 A. ensure B. assure C. require D. request

【正确答案】 A

【答案解析】[解析] 考查动词辨析。空格处所在句子的意思为“制造商______它会让你每天早晨醒来都会感觉精神振作”。A．ensure意为“保证，确保”，后面加sth. 或者that从句。这里you前省略了that，其意仍符合语境，故A项为正确答案。而assure虽意义相似，但其后通常加sb. ，用法为assure sb. of sth. ；require意为“需要，要求”；request意为“请求，要求”，这三项均不符合题意。

单选题 A. through B. into C. about D. on

【正确答案】 A

【答案解析】[解析] 考查词汇搭配。pass through为固定搭配，意为“经历，穿过”。代入句子中，表示“人们睡觉时经历几个睡眠阶段”，符合题意，故选A．through。pass into意为“进入”，pass与about不能构成搭配，pass on意为“去世，传递”，这三项均不符合题意。

单选题 A. reveals B. reverses C. resumes D. repeats

【正确答案】 D

【答案解析】[解析] 考查上下文语义与动词辨析。本题的解答有赖于对前一句话的理解，前一句中的“a sequence of sleep states“指一个睡眠状态的顺序，而且后面一句中的“in that cycle”也暗示前面提及的现象是一个循环过程。再结合本句的every 90 minutes，可以确定应该选择含有重复意思的repeat，即这个睡眠状态的顺序为每90分钟重复一次。故D．repeats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”，均不符合题意。

单选题 A. effect B. affect C. reflect D. perfect

【正确答案】 B

【答案解析】[解析] 考查动词辨析。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．affect意为“影响”，符合语境。为正确答案。effect作动词时，意为“实现，使生效”，reflect意为“反映，反射”，perfect作动词时意为“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] 考查逻辑关系。对“The point in that cycle at which you wake can affect how you feel later, and may ______ have a greater impact than how much or little you have slept. ”进行综合分析，尤其是通过“a greater impact than”可知，后者程度递增，D．even“甚至”表示递进，符合语境，为正确答案。

单选题 A. means B. marks C. says D. dictates

【正确答案】 A

【答案解析】[解析] 考查动词辨析。空格处所在句子的意思为“浅睡状态下被叫醒更有可能______醒来后精力充沛”。mean意为“意味着”，符合语境，故A项为正确答案。mark意为“做记号于，标明”，say意为“说”；dictate意为“口述，口授”，均不符合题意。

单选题 A. removes B. relieves C. records D. recalls

【正确答案】 C

【答案解析】[解析] 考查词汇搭配。所填词应该和pattern构成搭配。四个选项中只有C．records“记录”能与pattern构成搭配，故为正确答案。remove意为“移开，除去”；relieve意为“减轻，缓解”；recall意为“回忆起，召回”，均不符合题意。

单选题 A. proceeded B. produced C. pronounced D. progressed

【正确答案】 B

【答案解析】[解析] 考查动词辨析。______ during each phase of sleep作后置定语修饰brain waves，brainwaves作空格所填词的逻辑宾语。故首先可以排除不及物动词proceed“继续进行”和progress“进步，前进”。pronounce“发音，宣布”虽然可作及物动词，但是不能用brain waves作宾语。B．produced意为“生产，产生”，符合语境，为正确答案。

单选题 A. by B. of C. with D. over

单选题 A. familiar B. similar C. identical D. same

【正确答案】 D

【答案解析】[解析] 考查固定搭配。“the same...as...”为固定搭配，意为“和……一样”，故D．same为正确答案。familiar意为“熟悉的”，similar意为“相似的”，identical意为“相同的，相等的”，这三项均不能与as构成搭配。

单选题 A. findings B. prospects C. proposals D. purposes

【正确答案】 D

【答案解析】[解析] 考查固定搭配。“for...purpose”为固定搭配，意为“为了……目的”。故D．purposes为正确答案。funding意为“发现，(调查、研究的)结果”，prospect意为“前景，前途”，proposal意为“建议”，均不符合题意。

单选题 A. prompt B. program C. plug D. plan

【正确答案】 B

【答案解析】[解析] 考查动词辨析。本句句意为“你把闹钟______到你想要被叫醒的最近的时间”。“program...with”为习惯表达，意为“为……编织/设定(程序)等”，故B．program为正确答案。prompt意为“促使，推动”，plug意为“塞住；接通电源”，plan意为“计划”，均不符合题意。

单选题 A. where B. this C. which D. that

【正确答案】 C

【答案解析】[解析] 考查语法知识——定语从句的引导词。分析句子可知，at ______ you want to be wakened是一个定语从句，修饰前面的“the latest time”。句中需要填一个关系代词作at的宾语，介词之后只能用which而不能用that，所以C．which为正确答案。

单选题 A. then B. also C. almost D. yet

单选题 A. claim B. conclusion C. concept D. explanation

【正确答案】 C

【答案解析】[解析] 考查名词辨析。空格处所填的词作invented的宾语，是对前面内容的概括，前面说明了SleepSmart的设计原理和作用，故C．concept“概念”最符合语境，为正确答案。claim意为“要求，声称”，conclusion意为“结论”，explanation意为“解释”，均不能作invented的宾语。

单选题 A. once B. after C. since D. while

【正确答案】 B

【答案解析】[解析] 考查逻辑关系。空格前讲了一群学生首创了这一概念，空格后讲了一个朋友抱怨醒来时感到疲惫，并且考试的表现很差，因此空格处所填的词应为表示时间先后的连词。故B．after正确。since意为“自从……以来”，引导时间状语时主句要用完成时。