People who averaged fewer than seven hours of sleep per night in the weeks before being exposed to the cold virus were nearly three times as likely to get sick as those who averaged eight hours or more, a new study found.

Researchers used frequent telephone interviews to track the sleep habits of more than 150 men and women aged 21 to 55 over the last few weeks. Then they exposed the subjects to the virus, quarantined (检疫隔离) them for five days and kept track of who got sick.

Besides sleeping more, sleeping better also seemed to help the body fight illness: Patients who fared better on a measure known as “sleep efficiency”—the percentage of time in bed that you’re actually sleeping—were also less likely to get sick.

The results held true even after researchers adjusted for elements such as body-mass index, age, sex, smoking and pre-existing antibodies (抗体) to the virus.

The researchers aren’t exactly sure why sleeping better makes you less likely to develop a cold. But they do try to give an answer: “Sleep disturbance influences the regulation of symptom mediators (调节因子) that are released in response to infection.” In plain English, maybe tossing and turning when you’re infected with the cold virus contributes to the symptoms that define a cold.

The researchers were based at Carnegie Mellon, the University of Pittsburgh and the University of Virginia, and the study was funded by the National Institutes of Health.

1. According to the passage, what does the underlined word “subjects” mean in paragraph 2?

A. areas of knowledge in a school

B. people being studied in an experiment

C. research topics

D. animals being tested

2.It is shown in the passage that _______.

A. the researchers obtain information about the sleep habits by frequent interviews

B. the researchers do their research in the National Institutes of Health

C. people hope to avoid being infected with a cold by sleeping as much as possible

D. sleeping more and better helps regulate the symptom mediators

3.What’s the best title of the passage?

A. The Relationship Between Virus and Cold

B. How to Sleep Well

C. Good Sleep Helps Fight a Cold

D. The More the Sleep, the Better Your Body

Stone Hill Mall has fewer large department stores than most malls but, instead, features more than 100 small specialty shops, while the few that are not used yet will be filled as soon as the mall’s owners find proprietors（业主） who fit the mall’s image.

One thing that makes Stone Hill Mall popular was that all of the stores remain open form 9 a.m. until 10 p.m., Monday through Friday. This favorable start has certainly been advantageous thanks to such features as its being the only shopping center in the area to provide free baby-sitting for children from two to eight years old and its offering restaurants to suit every pocket, with the possible exception of the highly budget-conscious. Furthermore, as far as movie entertainment is concerned. Stone Hill Mall tops Westgate Mall, which looked very impressive when it opened has hast year, with three separate cinemas.

Besides, the air-conditioning system makes sure a comfortable inside temperature of 25 degrees centigrade no matter what the weather is like outside, and in addition to is three beautiful fountains, the mall has a quiet garden area with comfortable benches and chairs for shoppers who have become tired.

One complaint about Stone Hill Mall is that it is located outside the city, but there is a regular bus service between the mall and the city center. A further complaint might be that, although the mall is surrounded by trees to mix it with the scenery, it will be some years before these can effectively make the main buildings and the vast buildings and the vast parking lot a part of the area around.

67．Stone Hill Mall is different from other malls because it has __________.

　 A．many shops selling special goods　 　 B．shops selling expensive goods

　 C．more large department stores 　　　　　 D．more empty space to rent

68．Stone Hill Mail is popular with shoppers mainly because of its 　　　

　 A．children’s stores 　　 　　　　　　 B．long business hours

　 C．attractive restaurants 　　　　　　 D．entertainment equipment

69．It is implied in the passage that the writer takes a(an) 　　　 attitude towards the mall.

　 A．fair 　 　 B．indifferent 　 　 C．critical 　　　 D．one-sided

70．The main purpose of the passage is to 　　　 .

　 A．draw attention to the strange looking shopping centers

　 B．compare Stone Hill Mall with other shopping centers

　 C．discuss the favorable conditions of the mall

　 D．introduce the special kind of the mall

Once again, science supports what your grandmother told you: A good night's sleep helps your body fight a cold.

People who averaged fewer than seven hours of sleep per   1   in the weeks before being exposed to the cold virus were nearly three times   2   likely to get sick as those who   3   eight hours or more, a new study found.

Researchers used frequent telephone   4   to track the sleep   5   of more than 150 men and women aged 21 to 55 over the course of a few weeks. Then they   6   the subjects to the virus, quarantined them for five days and kept   7   of who got sick.

  8   sleeping more, sleeping better also seemed to   9   the body fight illness: Patients who fared better on a measure   10   as 'sleep efficiency' - the percentage of time in bed that you're actually sleeping - were also   11   likely to get sick.

The results held   12   even after researchers   13   for variables such as body-mass index, age, sex, smoking and pre-existing antibodies to the   14   .

  15   your grandmother, the researchers aren't exactly sure   16   sleeping better makes you less likely to   17   a cold. But they   18    take a stab at the answer: 'Sleep disturbance influences the regulation of proinflammatory cytokines（促炎细胞因子）, histamines, and other symptom mediators that are released in response to infection.' In plain English, maybe tossing and turning when you're   19   with the cold virus   20   to the symptoms that define a cold.

The researchers were based at Carnegie Mellon, the University of Pittsburgh and the University of Virginia, and the study was funded by the National Institutes of Health.

(   ) 1. A. day             B. night                C. week                       D. month

(   ) 2. A. more          B. as                    C. less                         D. same

(   ) 3. A. occurred     B. worked             C. averaged                  D. longed

(   ) 4. A. interviews   B. reports             C. announcements         D. demands

(   ) 5. A. hobbies       B. quality             C. progress                  D. habits

(   ) 6. A. exposed      B. placed              C. protected                 D. prayed

(   ) 7. A. touch          B. check                      C. track                       D. reward

(   ) 8. A. Except               B. Besides             C. Within                     D. Through

(   ) 9. A. benefit               B. guard                C. help                             D. assist

(   ) 10. A. known      B. acted                C. appointed                D. classified

(   ) 11. A. more         B. less                  C. far                          D. totally

(   ) 12. A. ideal         B. false               C. actual                      D. true

(   ) 13. A. adopted     B. adjusted            C. enlarged                  D. employed

(   ) 14. A. bodies       B. cells                 C. virus                       D. medicines

(   ) 15. A. Like          B. As                    C. Against                    D. By

(   ) 16. A. What               B. When               C. Where                     D. Why

(   ) 17. A. develop     B. form                C. fight                       D. prevent

(   ) 18. A. did           B. often                C. do                           D. never

(   ) 19. A. infected     B. surrounded       C. limited                    D. attached

(   ) 20. A. pulls         B. promotes          C. speeds                     D. contributes

Once again, science supports what your grandmother told you: A good night's sleep helps your body fight a cold.

People who averaged fewer than seven hours of sleep per   1   in the weeks before being exposed to the cold virus were nearly three times   2   likely to get sick as those who   3   eight hours or more, a new study found.

Researchers used frequent telephone   4   to track the sleep   5   of more than 150 men and women aged 21 to 55 over the course of a few weeks. Then they   6   the subjects to the virus, quarantined them for five days and kept   7   of who got sick.

  8   sleeping more, sleeping better also seemed to   9   the body fight illness: Patients who fared better on a measure   10   as 'sleep efficiency' - the percentage of time in bed that you're actually sleeping - were also   11   likely to get sick.

The results held   12   even after researchers   13   for variables such as body-mass index, age, sex, smoking and pre-existing antibodies to the   14   .

  15   your grandmother, the researchers aren't exactly sure   16   sleeping better makes you less likely to   17   a cold. But they   18    take a stab at the answer: 'Sleep disturbance influences the regulation of proinflammatory cytokines（促炎细胞因子）, histamines, and other symptom mediators that are released in response to infection.' In plain English, maybe tossing and turning when you're   19   with the cold virus   20   to the symptoms that define a cold.

The researchers were based at Carnegie Mellon, the University of Pittsburgh and the University of Virginia, and the study was funded by the National Institutes of Health.

(   ) 1. A. day             B. night               C. week                      D. month

(   ) 2. A. more          B. as                    C. less                         D. same

(   ) 3. A. occurred     B. worked             C. averaged                  D. longed

(   ) 4. A. interviews   B. reports             C. announcements        D. demands

(   ) 5. A. hobbies       B. quality             C. progress                  D. habits

(   ) 6. A. exposed      B. placed              C. protected                 D. prayed

(   ) 7. A. touch          B. check                      C. track                      D. reward

(   ) 8. A. Except               B. Besides             C. Within                     D. Through

(   ) 9. A. benefit               B. guard                C. help                             D. assist

(   ) 10. A. known      B. acted               C. appointed               D. classified

(   ) 11. A. more        B. less                  C. far                          D. totally

(   ) 12. A. ideal        B. false               C. actual                      D. true

(   ) 13. A. adopted     B. adjusted            C. enlarged                  D. employed

(   ) 14. A. bodies       B. cells                 C. virus                      D. medicines

(   ) 15. A. Like          B. As                    C. Against                    D. By

(   ) 16. A. What               B. When               C. Where                     D. Why

(   ) 17. A. develop     B. form               C. fight                      D. prevent

(   ) 18. A. did           B. often               C. do                           D. never

(   ) 19. A. infected     B. surrounded       C. limited                    D. attached

(   ) 20. A. pulls        B. promotes          C. speeds                     D. contributes