题目内容
12．Doctors have to constantly update their knowledge so as to maintain their professional competence．分析 医生必须不断地更新知识来维护他们的专业胜任能力．
解答 答案：competence
根据句意以及首字母的提示可知，此处指的是：专业技能，专业胜任能力；由于此处用在形容词professional之后，故用名词competence．
点评 做类似的题时，首先应根据句意以及首字母的提示判断出空缺处的意思；其次从语法分析的角度，确定出应填单词的形式；因此在平时的学习中，除了应牢固记忆单词的拼写之外，还要熟练掌握一些的语法知识．
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2．Napping for a while at daytime is a very smart and healthy move．The Mayo Clinic says naps（51）B relaxation，better mood and alertness，and a sharper working（52）D．A 2008British study found that compared to getting more nighttime sleep，a mid-day nap was the best way to（53）A the mid-afternoon sleepiness．
According to the Harvard Health Letter，several studies have shown that people（54）C new information better when they take a nap shortly after learning it．And，most （55）B，a 2007study of nearly 24，000Greek adults in the Archives of Internal Medicine found that people who napped（56）A had a 37percent reduced risk of dying from heart disease compared to people who didn't nap．
Of course，napping isn't （57）C for everyone．If you're suffering from inability to sleep，naps that are too long or taken too late in the day can （58）D with your ability to fall or stay asleep at night．
But for most，naps can make you feel sharper and happier．Naps provide different benefits（59）B on how long they are．A 20-minute nap will boost alertness and concentration； a 90-minute snooze（小睡）can （60）C creativity．
According to prevention．com，you （61）B a natural dip in body temperature between 1p．m．and 3p．m．A short nap at this time can boost alertness for several hours and，for most people，shouldn't （62）C being able to fall asleep at night．
Pick a dark，cozy place that's not too warm or too chilly．Prevention．com （63）D napping on the couch instead of in bed，so you're less （64）B to snooze for too long．
Surprisingly，the best place to take a nap may be a hammock（吊床）if you have one．A Swiss study（65）B last year found that people fell asleep faster and had deeper sleep when they napped in a hammock than in a bed．That same rocking motion that puts babies to sleep works wonders for grown-ups，too．
According to the Harvard Health Letter，several studies have shown that people（54）C new information better when they take a nap shortly after learning it．And，most （55）B，a 2007study of nearly 24，000Greek adults in the Archives of Internal Medicine found that people who napped（56）A had a 37percent reduced risk of dying from heart disease compared to people who didn't nap．
Of course，napping isn't （57）C for everyone．If you're suffering from inability to sleep，naps that are too long or taken too late in the day can （58）D with your ability to fall or stay asleep at night．
But for most，naps can make you feel sharper and happier．Naps provide different benefits（59）B on how long they are．A 20-minute nap will boost alertness and concentration； a 90-minute snooze（小睡）can （60）C creativity．
According to prevention．com，you （61）B a natural dip in body temperature between 1p．m．and 3p．m．A short nap at this time can boost alertness for several hours and，for most people，shouldn't （62）C being able to fall asleep at night．
Pick a dark，cozy place that's not too warm or too chilly．Prevention．com （63）D napping on the couch instead of in bed，so you're less （64）B to snooze for too long．
Surprisingly，the best place to take a nap may be a hammock（吊床）if you have one．A Swiss study（65）B last year found that people fell asleep faster and had deeper sleep when they napped in a hammock than in a bed．That same rocking motion that puts babies to sleep works wonders for grown-ups，too．
| 51．A．relieve | B．promote | C．operate | D．support |
| 52．A．feeling | B．frame | C．sense | D．mind |
| 53．A．cope with | B．put aside | C．talk about | D．carry upon |
| 54．A．remark | B．consider | C．remember | D．concern |
| 55．A．reportedly | B．unbelievably | C．constantly | D．frankly |
| 56．A．regularly | B．enormously | C．heavily | D．strongly |
| 57．A．exact | B．correct | C．right | D．accurate |
| 58．A．connect | B．deal | C．compete | D．interfere |
| 59．A．focusing | B．depending | C．relying | D．basing |
| 60．A．enlarge | B．engage | C．enhance | D．enroll |
| 61．A．explore | B．experience | C．exercise | D．implement |
| 62．A．produce | B．handle | C．affect | D．urge |
| 63．A．postpones | B．discourages | C．acknowledges | D．recommends |
| 64．A．obliged | B．tempted | C．adopted | D．attracted |
| 65．A．pronounced | B．published | C．discovered | D．cultivated |