根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

It’s such a common event that you probably never asked yourself why you sleep.  ___1____ In fact, for sleep researchers, it’s one of the biggest unanswered questions in the field.

Stop and think about it for a second. Why should we sleep? ____2_____ But we sleep every night, even when we have had plenty of rest. There are，no doubt，several different answers to this question, but let’s just consider one general purpose of sleep: ____3_____ Human beings are creatures that are normally active during daylight hours, when our senses function most effectively.  ____4_____ We can’t see objects well, our color vision is entirely lost, and we don’t have the smelling or hearing sharpness of other animals.  So it actually does make sense to have us stay where we are during the dangerous period when night-waking animals are walking here and there. And one sure way to make sure we don’t fall down everywhere and get lost or eaten is to have us not move for seven or eight hours, rising again only when the light is back and our survival chances are better.

It’s not the only reason we sleep. ____5____Perhaps even the most important one.

A. Is it because we get tired?

B. Should that put human beings in a terrible situation?

C. But from a scientific point of view, this is far from an ordinary matter.

D. But in terms of evolution, it may have been one of the first reasons.

E. Furthermore, if you were designing an animal, would you have it come into long periods of unconsciousness every twenty-four hours? 

F. Sleep as a survival approach.

G. At night, humans do rather poorly.

 

阅读下面短文，掌握其大意，然后从21----40各题所给的4 个选项（A、B、C和D）中，选出最佳选项。

A farewell party was going on. Sylvia Calver hated being the center of any pubic show where she didn’t know anyone. It made her  36  hot and she always felt she wanted to go away somewhere. But on an occasion like this when she knew  37 , there was no  38 to feel shy.  39she had made up her mind to  40  people’s attention for once in her life. Unlike others, Sylvia didn’t have any sad feelings herself at leaving Palmeira Court Hotel or saying goodbye to its 41  — she had left so many other  42 , and known too many people in her life to get upset by such things now.

Yet this  43 was a particular occasion, and she hadn’t had so many of those in her  44. She had put on her  45  black dress and her long earrings. She had wanted to enjoy being the center of  46 for one evening, but now they had  47  old Miss Hutton of all people to give the  48 speech, whom she disliked. Even so, she thought there was no sense in getting  49  about it, for it was the first rule her  50 had given her — avoid all anxiety, take things easy. So, surprising herself by enjoying her own well-rounded white arm as  51 showed through the sleeve of her  52  dress, she took a taste of her drink and then sat back comfortably with her cigarette. And her doctor’s orders worked! For 53  out slowly, she put Miss Hutton off the end of her  54  with a cloud of tobacco smoke, so that she smiled to herself at the old girl’s funny expression. She  55 herself quite well that night, even to her own surprise.

1.A.face       B.show         C.room          D.dress

2.A.nothing    B.nobody       C.everything    D.everybody

3.A.chance     B.time      C.reason             D.use

4.A.So         B.But        C.For                    D.There

5.A.pay                 B.give         C.enjoy          D.offer

6.A.guests           B.people    C.places                  D.things

7.A.houses      B.friends   C.hotels        D.parties

8.A.morning     B.afternoon C.evening       D.night

9.A.life            B.work          C.school           D.home

10.A.large           B.best           C.most            D.worst

11.A.service     B.exhibition  C.Group       D.attention

12.A.ordered      B.chosen       C.wished      D.helped

13.A.long    B.great          C.goodbye     D.welcome

14.A.excited       B.anxious      C.puzzled     D.pleased

15.A.teacher      B.friend      C.husband    D.doctor

16.A.they                      B.he                C.it                D.she

17.A.black      B.white            C.red            D.green

18.A.getting      B.putting    C.breathing   D.speaking

19.A.action       B.speech     C.work         D.performance

20.A.made        B.enjoyed    C.understood  D.thought

 

阅读下面短文，掌握其大意，然后从21----40各题所给的4 个选项（A、B、C和D）中，选出最佳选项。

A farewell party was going on. Sylvia Calver hated being the center of any pubic show where she didn’t know anyone. It made her  36  hot and she always felt she wanted to go away somewhere. But on an occasion like this when she knew  37 , there was no  38 to feel shy.  39she had made up her mind to  40  people’s attention for once in her life. Unlike others, Sylvia didn’t have any sad feelings herself at leaving Palmeira Court Hotel or saying goodbye to its 41  — she had left so many other  42 , and known too many people in her life to get upset by such things now.

Yet this  43 was a particular occasion, and she hadn’t had so many of those in her  44. She had put on her  45  black dress and her long earrings. She had wanted to enjoy being the center of  46 for one evening, but now they had  47  old Miss Hutton of all people to give the  48 speech, whom she disliked. Even so, she thought there was no sense in getting  49  about it, for it was the first rule her  50 had given her — avoid all anxiety, take things easy. So, surprising herself by enjoying her own well-rounded white arm as  51 showed through the sleeve of her  52  dress, she took a taste of her drink and then sat back comfortably with her cigarette. And her doctor’s orders worked! For 53  out slowly, she put Miss Hutton off the end of her  54  with a cloud of tobacco smoke, so that she smiled to herself at the old girl’s funny expression. She  55 herself quite well that night, even to her own surprise.

A.face       B.show       C.room          D.dress

A.nothing    B.nobody     C.everything    D.everybody

A.chance     B.time      C.reason          D.use

A.So         B.But      C.For               D.There

A.pay            B.give       C.enjoy        D.offer

A.guests         B.people   C.places        D.things

A.houses      B.friends   C.hotels        D.parties

A.morning     B.afternoon C.evening       D.night

A.life          B.work       C.school         D.home

A.large         B.best         C.most           D.worst

A.service     B.exhibition  C.Group       D.attention

A.ordered      B.chosen      C.wished      D.helped

A.long          B.great        C.goodbye     D.welcome

A.excited      B.anxious     C.puzzled     D.pleased

A.teacher      B.friend      C.husband    D.doctor

A.they                 B.he            C.it            D.she

A.black      B.white         C.red          D.green

A.getting      B.putting    C.breathing   D.speaking

A.action       B.speech     C.work        D.performance

A.made        B.enjoyed    C.understood  D.thought

It is not unusual to see your desk-mate yawn (打呵欠) as he complains that he didn't have a good sleep the night before. Many teens don't get enough sleep because they have too much homework, which keeps them up at night. Some teens cannot sleep at night even when they want to.

Studies show that during your teenage years, the body's biological clock is reset, telling you to sleep later at night and wake up later in the morning.

But changes in the body clock aren't the only reason teens lose sleep. Lots of people have insomnia (失眠). The most common cause of insomnia is stress. But all sorts of things can lead to insomnia. These include physical discomfort, emotional troubles and even sleeping environment. It's common for everyone to have insomnia from time to time. But if it lasts for a month or more go and see a doctor.

Some people have a condition that causes stomach acid (酸) to move backward towards the chest. This produces the uncomfortable, burning feeling called heartburn. So even if the person doesn't notice the feelings of heartburn because he is sleeping, he may feel tired the next day.

Most teens have nightmares sometimes. But, if they are frequent, a person's sleep pattern can be seriously affected. The most common cause of nightmares is emotional problems, such as stress (压力) or anxiety. If you have them a lot, it's a good idea to talk to a doctor.

Doctors encourage teens to make lifestyle changes to develop good sleeping habits. You probably know that coffee can keep you awake, but did you know that playing video games or watching TV does the same?

1. The main idea of the first paragraph is ________.

A. There is a problem that teenagers can’t get enough sleep.

B. Sleeping problems have different causes.

C. Yawning is a good way to get rid of sleep.

D. Teenagers care too much for homework.

2. The Teenagers’ biological clock ________.

A. easily makes teenagers lead to insomnia

B. is the origin of their insomnia

C. provides them with plenty of time at night

D. is helpful to improve their concentration(注意力)

3. What does the writer say about “nightmares”?

A. It is nothing and shouldn’t be taken seriously.

B. It can release their stress or anxiety.

C. Emotional problems are the only way to form nightmares.

D. People will suffer from sleep if frequent.

4. Which way can help to get rid of insomnia?

A. Drinking some coffee before going to bed.

B. Playing video game or watching TV from time to time.

C. Turning to a doctor for help.

D. Eating much medicine for insomnia.

第二节完型填空（共20小题；每小题1.5分，满分30分）

阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项（A、B、C和D）中，选出最佳选项

I am not one who is frightened easily, but I must admit that one night I saw a firure that really struck terror into my heart.

I   36   it was a cold moon - lit night when I was walking home. It was the first night of my whole life that I had been outside   37   at such a late time. There were   38  few people on the road at night. Even during the day, the road was used by only some. On that night, it seemed even   39  . While I was walking, I could hear some   40   made by creatures that love the night world. I moved really fast towards home. It was   41   because I was hungry. More importantly, I was eager to get back home for warmth. All of a sudden, I   42   an old lady in a short distance away. Her   43   was covered with a white cloth. She was   44   to me, I think.

I was a bit   45  . I wanted to know   46   she was there at that time of the late night. I stopped walking for a while. As I   47   there, stories about ghosts (鬼) began to come to my mind one after   48  . I was soon   49   fear and started to run as fast as I could. When I reached home I could   50   speak.

The next day, however, I   51   that place again to make sure that the woman was not a ghost but indeed a real person. But I could find no footprints there   52   a banana plant. I realized then that it was the banana plant with its leaves moving in the gentle wind that   53   like a woman waving her hand. I had indeed made a fool of myself; but after the   54   night’s experience, this   55   was small relief to me.

36．A．realized       B．recognized       C．remembered     D．reminded

37．A．alone         B．asleep          C．awake          D．lonely

38．A．never              B．often         C．seldom        D．rarely

39．A．busier          B．noisier         C．quieter         D．wider

40．A．noises          B．quarrels       C．songs         D．voices

41．A．completely       B．mainly         C．obviously     D．partly

42．A．made sense of  B．caught sight of C．got ahead of     D．took hold of

43．A．waist         B．leg           C．head         D．hand

44．A．smiling        B．waiting        C．whispering       D．waving

45．A．mysterious       B．cautious       C．conscious     D．curious

46．A．why         B．when         C．what         D．how

47．A．lay           B．sat            C．stood         D．walked

48．A．another        B．other         C．others          D．the other

49．A．addicted to       B．filled with     C．far from      D．short of

50．A．clearly         B．easily              C．hardly         D．loudly

51．A．traveled       B．visited         C．appreciated      D．went

52．A．over         B．without        C．than         D．except

53．A．felt          B．looked         C．smelt         D．sounded

54．A．previous      B．next         C．last           D．following

55．A．invention     B．achievement     C．contribution     D．discovery