Do you often feel tired or hard to concentrate(集中精力) in class ? If your answers to this question  is yes,      【小题1】     .  .Not getting enough sleep can lead to many kinds of problems.
New studies show that not only Chinese students suffers from lack(不足) of sleep，American students also have the same problem .   【小题2】    Why are they so tired ? One big reason is the use of electronic products（电子产品）.
A recent survey finds out that 71% of American kids aged 8 to 18 have TVs in the rooms and  about 36% have computers in their rooms.   【小题3】    , playing video games ,sending text messages to friends and watching TV before bedtime.
How to solve the problem ? Scientist advise “  【小题4】   . ”Spending more time on sleep can help students stay healthy     【小题5】  
根据以上内容，从下列五个选项中选择适当的句子还原到短文中，使短文完整与正确。将其标号在答题卡上涂黑。（每小题2分，共10分）

A．Some American primary school students are very tired and sometimes they even fall asleep in class. B．perhaps it means you need more sleep. C．It’s never too late to change bad sleep habits D．Many kids spend a lot of time surfuring the Internet , E. and do well at school.

 

Do you often feel tired or hard to concentrate(集中精力) in class ? If your answers to this question  is yes,      【小题1】     .  .Not getting enough sleep can lead to many kinds of problems.
New studies show that not only Chinese students suffers from lack(不足) of sleep，American students also have the same problem .   【小题2】    Why are they so tired ? One big reason is the use of electronic products（电子产品）.
A recent survey finds out that 71% of American kids aged 8 to 18 have TVs in the rooms and  about 36% have computers in their rooms.   【小题3】    , playing video games ,sending text messages to friends and watching TV before bedtime.
How to solve the problem ? Scientist advise “  【小题4】   . ”Spending more time on sleep can help students stay healthy     【小题5】  
根据以上内容，从下列五个选项中选择适当的句子还原到短文中，使短文完整与正确。将其标号在答题卡上涂黑。（每小题2分，共10分）

A. Some American primary school students are very tired and sometimes they even fall asleep in class. B. perhaps it means you need more sleep. C. It’s never too late to change bad sleep habits D. Many kids spend a lot of time surfuring the Internet , E. and do well at school.

 

Do you often feel tired or hard to concentrate(集中精力) in class ? If your answers to this question  is yes,       1.     .   .Not getting enough sleep can lead to many kinds of problems.

New studies show that not only Chinese students suffers from lack(不足) of sleep，American students also have the same problem .    2.     Why are they so tired ? One big reason is the use of electronic products（电子产品）.

A recent survey finds out that 71% of American kids aged 8 to 18 have TVs in the rooms and  about 36% have computers in their rooms.    3.     , playing video games ,sending text messages to friends and watching TV before bedtime.

   How to solve the problem ? Scientist advise  “   4.   . ”Spending more time on sleep can help students stay healthy     5.   

根据以上内容，从下列五个选项中选择适当的句子还原到短文中，使短文完整与正确。将其标号在答题卡上涂黑。（每小题2分，共10分）

 

A. Some American primary school students are very tired and sometimes they even fall asleep in class. B. perhaps it means you need more sleep. C. It’s never too late to change bad sleep habits D. Many kids spend a lot of time surfuring the Internet , E. and do well at school.

 

 

    Do you know that it is your immune system (免疫系统) working against the virus that makes you uncomfortable when getting a cold, but not the virus itself? So when you have got a strong immune system—and the virus is strong enough too—you will possibly get terrible cold symptoms (症状) such as having a headache, having a high fever, sneezing or coughing,

    Vitamin C won't stop a cold. It is said that Vitamin C works by increasing white blood cells.

However, many tests have shown that it does not prevent colds. At best, it only reduces the time of symptoms.

    Staying indoors won't protect you. One of the most likely sources (根源) of cold viruses is your computer mouse or desk. A study of the cold virus in offices found that 46 per cent of computer mice and 45 per cent of telephones had cold viruses on them.

    Wearing warm clothes won't protect you. Colds are more common in autumn and winter. That's because the cool, wet and cold weather drives people indoors, where viruses may more easily jump from one person to the next. And the distinct peak (高峰期) in colds is in September and February, which likely because of the return of students to schools and colleges after the summer and winter holidays.

    Old wives are right about chicken soup. Grandmothers' chicken soup is an old cure for colds for a long 6me. Scientists say it is true. Chicken soup does help cure a cold, so many wives usually cook chicken soup for their family members in cold winters.

29. According to the passage, when your immune system is working against the virus, you don't   have cold symptoms like ________.

     A. headache      B. stomachache       C. sneeze         D. cough

30. Which of the following ways can really help cure colds?

     A. Staying indoors.

     B. Wearing more clothes.

     C. Drinking some chicken soup.

     D. Eating some fruit with Vitamin C.

31. Why are colds more common in autumn and winter?

     A. Because students return to school.

     B. Because the weather is cool, wet and cold.

     C. Because people don't drink chicken soup.

     D. Because people use computers or telephones more often.