职称英语考试2017年全真模拟试题卫生类C级(一) 2
Lotan Shilo and a team at the Sapir Medical Center in Tel Aviv University found that six volunteers slept less well after a cup of caffeinated coffee than after drinking the same amount of decaf. On average， subjects slept 336 minutes per night after drinking caffeinated coffee，compared with 415 minutes after decaf .They also took half an hour to drop off——twice as long as usual——and jigged around in twice as much……
In the second phase of the experiment， the researchers woke the volunteers evey three hous and asked them to give a urine sample. Shilo measured concentrations of abreakers were half those in decaf drinkers. The results suggest that melatonin concentrations in caffeine drinkers were half those in decaf drinkers. In a paper accepted for publication in Sleep Medicine， the researchers suggest that caffeine blocks production of the enzyme the drives melatonin production.
Because it can take many hours to eliminate caffeine from the body， Ohayon recommends that coffee lovers switch to decaf after lunch.
练习：
1. The author mentions“ pick-me-up” to indicate that
A） melatonin levels need to be raised.
B） Neurohormone can wake us up.
C） Coffee is stimulant.
D） Decaf is a caffeinated coffee.
2. Which of the following tells us how caffeine affects sleep？
A） Caffeine blocks production of the enzyme that stops melatonin production.
B） Caffeine interrupts the flow of sleep hormone.
C） Caffeine halves the body's levels of sleep hormone.
D） Caffeine stays in the body for many hours.
3. What does paragraph 3 mainly discuss？
A） Different effects of caffeinated coffee and decaf on sleep.
B） Different findings of Lotan Shilo and a team about caffeine.
C） The fact that the subjects slept 415 minutes per night after drinking decaf.
D） The evidence that the subjects took half an hour to fall asleep.
4. What does the experiment mentioned in paragraph in paragraph 4 prove？
A） There are more enzymes in decaf drinkers' urine sample.
B） There are more melatonin concenrrations in caffeine drinkers' urine sample.
C） Decaf drinkers produce less melatonin.
D） Caffeine drinkers produce less sleep hormone.
5. The author of this passage probably agrees that
A） coffee lovers sleep less than those who do not drink coffee.
B） We should not drink coffee after supper.
C） People sleep more soundly at midnight than at 3 a.m……
D） If we feel sleepy at night， we should go to bed immediately.
第五部分：补全短文（每题2分，共10分）
阅读下面的短文，文章中有5处空白，文章后有6组文字，请根据文章的内容选择5组文字，将其分别放会文章原有位置，以恢复文章原貌。请将答案涂在答题卡相应的位置。
How one simple movement can let slip the secrets of the mind
Body language is the quiet，secret and most powerful language of all！ It is said that our body movements communicate about 50 per cent of what we really mean while words themselves only express 7 per cent.So，while your mouth is closed，just what is your body saying…
Arms.——（1）——If you keep your a／ins to the sides of your body or behind your back.this suggests you are not afraid of taking on.whatever comes your way.——（2）——If someone upsets you，just cross your arms to show you're unhappy！
Head.When you Want to appear confident，keep your head level.If you are monitor in class，you Can also take on this position when you want your words to be taken seriously. ——（3）——
Legs.Your legs tend to move around a lot more than normal when you are nervous or telling lies.If you are at interviews，try to keep them still！
Posture.A good posture makes you feel better about yourself.——（4）——This makes breathing more difficult，which in turn Can make you feel nervous or uncomfortable.
Mouth.When you are thinking，you often purse your lips.You might4 also use this position to hold back an angry comment you don't wish to show.——（5）——
词汇：
confident／adj.自信的
purse／vt.皱缩；皱拢
outgoing／adj.开朗的
posture／n.姿势
inwards／adv.向内
receptive／adj.善于接受的，能接纳的
练习：
A If you ale feeling down（5），you normally don't sit straight，with your shoulders inwards.
B If you are pleased，you usually open your eyes wide and people Can notice this.