A new study says one part of the human brain may become smaller as the result of a condition known as jet lag. Jet lag results from flying long distances in an airplane. People with jet lag may feel extremely tired for several days. They may also have problems thinking clearly and remembering.

Recently a researcher at the University of Bristol in Britain reported the findings of his jet lag study, which involved twenty young women who worked for international airlines. They had served passengers on airplanes for five years. These flight attendants flew across many countries and at least seven time zones. In the study, the flight attendants had different amounts of time to recover from jet lag. Half the women spent five days or fewer in their home areas between long flights The other half spent more than fourteen days in their home areas.

The researcher took some saliva from the women's mouths to measure levels of a hormone(荷尔蒙) that increases during stress (紧张). He tested them to see if they could remember where black spots appeared on a computer screen. And he took pictures of their brains to measure the size of the brain's temporal lobes (脑叶).

It was found that the women who had less time between flights had smaller right temporal lobes. This area of the brain deals with recognizing and remembering what is seen. The same group performed worse and had slower reaction times on the visual memory test. And their saliva samples showed higher levels of stress hormones.

The researcher believes the brain needs at least ten days to recover after a long trip. He says airline workers told him their ability to remember got worse after working on planes for about four years. Other studies have shown that increased feelings of stress can cause a loss of cells in the part of the brain that controls memory.

Scientists say more tests are needed to study the effects of jet lag on the brain. They want to find out if too much jet lag could permanently (永久性的) affect memory.

According to the text, jet lag _________.

A. can cause difficulties in speaking

B. can make people feel tired for a few weeks

C. can be only found in flight attendants

D. can be caused by flying over several time zones

It can be inferred from the text that _________.

A. the conclusion is refused by many scientists

B. scientists fear that this research is not done properly

C. every scientific conclusion needs the support from many tests

D. the women who were examined in the research were not healthy

From the result of the research we can see that _________.

A. the women who have longer rest at home show better memory

B. the women who fly in short time have smaller right temporal lobes

C. the women who have longer flights fail the memory test

D. the women who rest more than 14 days produce less hormones

What is the subject discussed in the text?

A. The cause of jet lag.      B. A story of a group of flight attendants.

C. The importance of having enough rest after flights.

D. A research about the effects of jet lag on the brain.

A Strange Greeting, a True Feeling Last week I was invited to a doctor’s meeting at the Ruth hospital for incurables. In one of the wards a patient, an old man, got up shakily from his bed and moved towards me. I could see that he hadn't long to   1   , but he came up to me and placed his right foot close mine on the floor.

    “Frank！” I cried in astonishment. He couldn’t   2  , as I knew, but all the time   3   his foot against mine.

    My   4   raced back more than thirty years to the   5   days of 1941, when I was a student in London. The   6   was an air-raid shelter, in which I and about hundred other people slept every night. Two of the regulars were Mrs. West and her son Frank.

      7   wartime problems, we shelter-dwellers got to   8   each other very well. Frank West   9   me because he wasn’t   10  , not even at birth. His mother told me he was 37 then, but he had   11   of a mind than a baby has. His “  12  ” consisted of rough sounds——sounds of pleasure or anger and   13   more. Mrs. West, then about 75, was a strong, capable woman, as she had to be, of course, because Frank   14   on her entirely. He needed all the   15   of a baby.

    One night a policeman came and told Mrs. West that her house had been flattened by a 500-pounder. She   16   nearly everything she owned.

    When that sort of thing happened, the rest of us helped the   17   ones. So before we   18   that morning, I stood beside Frank and   19   my right foot against his. They were about the same size. That night, then, I took a pair of shoes to the shelter for frank. But as soon as he saw me he came running and placed his right foot against mine. After that, his   20   to me was always the same.

1．A．work         B．stay   C．live   D．expect

2．A．answer       B．speak C．smile        D．laugh

3．A．covering     B．moving     C．fighting    D．pressing

4．A．minds        B．memories  C．thoughts   D．brains

5．A．better         B．dark  C．younger          D．old

6．A．cave          B．place C．sight         D．scene

7．A．Discussing        B．Solving    C．Sharing           D．Suffering

8．A．learn from        B．talk to      C．help         D．know

9．A．needed      B．recognized       C．interested        D．encouraged

10．A．normal           B．common   C．unusual           D．quick

11．A．more       B．worse       C．fewer       D．less

12．A．word       B．speech      C．sentence          D．language

13．A．not          B．no     C．something       D．nothing

14．A．fed          B．kept  C．lived        D．depended

15．A．attention         B．control     C．treatment        D．management

16．A．lost         B．needed      C．destroyed        D．left

17．A．troublesome     B．unlucky    C．angry       D．unpopular

18．A．separated        B．went  C．reunited          D．returned

19．A．pushed     B．tried  C．showed           D．measured

20．A．nodding          B．greeting    C．meeting          D．acting

A new study by Penn State College of Medicine research team found that honey is a better and safer treatment for children than cough medicines.

   Ian Paul, the study’s lead researcher, was motivated to test honey because treating coughs in children has recently become a sticky subject. Coughing is the body’s way of cleaning irritated (受刺激的) airways to help you breathe. But too much coughing can irritate your lungs and throat even more. It can also make it tough to get the sleep your body needs to heal. Hoping to ease the suffering of their children, parents often give them cough medicines.

But there have never been any good studies showing that they work. Cough and cold medicines may also cause serious side effects. Hundreds of kids die in the hospital each year after receiving too much cough medicine by mistake. Last October, the US Food and Drug Administration suggested that parents should not give cough medicines to children under 6.

In order to search for a different solution, Paul designed a study that involved 105 kids who were sick with coughs and other cold conditions. At bedtime, the kids took buckwheat(荞麦) honey, honey-flavored (蜜蜂味的) DM (one of the most common ingredients成分in cough medicine), or no treatment. Parents and kids in the no-treatment group knew they weren’t getting anything, but the other two groups weren’t told which treatment they were getting.

The surveys showed that kids who swallowed about 2 teaspoons of buckwheat

honey before bedtime coughed less and slept better than kids in other groups.

“When parents want something for their kids to take,” Paul says, “honey seems

 like the best option.”

But what gives honey its healing power? Substances called antioxidants(抗氧化剂) may be part of the answer. All honey contains antioxidants that protect our cells from damage. Studies show that antioxidant levels in the body rise after someone swallows honey.

Which of the following can be the best title for this passage?

A. Sweet solution to kids’ coughing

B. No cough medicines to children

   C. Best treatment for your cold

   D. Cough medicines don’t work

We can learn from Paragraph 2 that coughing ______.

   A. can cure lung and throat diseases

   B. is more harmful to children

C. sometimes does good to people 

   D. helps improve children’s die

During Paul’s experiment, the kids who received treatment __________.

   A. seemed much worse than before

B. had no idea what they swallowed

C. knew they weren’t getting anything

   D. coughed less and slept better

According to the passage, Paul’s experiment proved that ____.

A. honey may have real healing power

B. cough medicines may cause side effect

    C. cough medicines don’t really work

D. buckwheat honey contain more antioxidants

A Strange Greeting, a True Feeling Last week I was invited to a doctor’s meeting at the Ruth hospital for incurables. In one of the wards a patient, an old man, got up shakily from his bed and moved towards me. I could see that he hadn't long to   1   , but he came up to me and placed his right foot close mine on the floor.

 “Frank！” I cried in astonishment. He couldn’t   2  , as I knew, but all the time   3   his foot against mine.

My   4   raced back more than thirty years to the   5   days of 1941, when I was a student in London. The   6   was an air-raid shelter, in which I and about hundred other people slept every night. Two of the regulars were Mrs. West and her son Frank.

      7   wartime problems, we shelter-dwellers got to   8   each other very well. Frank West   9   me because he wasn’t   10  , not even at birth. His mother told me he was 37 then, but he had   11   of a mind than a baby has. His “  12  ” consisted of rough sounds——sounds of pleasure or anger and   13   more. Mrs. West, then about 75, was a strong, capable woman, as she had to be, of course, because Frank   14   on her entirely. He needed all the   15   of a baby.

One night a policeman came and told Mrs. West that her house had been flattened by a 500-pounder. She   16   nearly everything she owned.

When that sort of thing happened, the rest of us helped the   17   ones. So before we   18   that morning, I stood beside Frank and   19   my right foot against his. They were about the same size. That night, then, I took a pair of shoes to the shelter for frank. But as soon as he saw me he came running and placed his right foot against mine. After that, his   20   to me was always the same.

1．A．work            B．stay            C．live            D．expect

2．A．answer          B．speak         C．smile          D．laugh

3．A．covering        B．moving          C．fighting         D．pressing

4．A．minds         B．memories       C．thoughts        D．brains

5．A．better            B．dark           C．younger            D．old

6．A．cave             B．place          C．sight                  D．scene

7．A．Discussing        B．Solving      C．Sharing             D．Suffering

8．A．learn from         B．talk to        C．help               D．know

9．A．needed            B．recognized  C．interested          D．encouraged

10．A．normal            B．common    C．unusual          D．quick

11．A．more             B．worse        C．fewer                  D．less

12．A．word            B．speech       C．sentence           D．language

13．A．not               B．no          C．something         D．nothing

14．A．fed               B．kept        C．lived             D．depended

15．A．attention           B．control       C．treatment          D．management

16．A．lost               B．needed       C．destroyed          D．left

17．A．troublesome     B．unlucky      C．angry                  D．unpopular

18．A．separated        B．went          C．reunited                 D．returned

19．A．pushed          B．tried        C．showed                 D．measured

20．A．nodding          B．greeting      C．meeting            D．acting

       A new study by a Penn State College of Medicine research team found that honey is a better and safer treatment for children than cough medicines.   

       Ian Paul, the study’s lead researcher, was motivated to test honey because treating coughs in children has recently become a sticky subject. Coughing is the body’s way of clearing irritated (受刺激的) airways to help you breathe. But too much coughing can irritate your lungs and throat even more. It can also make it tough to get the sleep your body needs to heal. Hoping to ease the suffering of their children, parents often give them cough medicines.  

       But there have never been any good studies showing that they work. Cough and cold medicines may also cause serious side effects. Hundreds of kids die in the hospital each year after receiving too much cough medicine by mistake. Last October, the US Food and Drug Administration suggested that parents should not give cough medicines to children under 6.

       In order to search for a different solution, Paul designed a study that involved 105 kids who were sick with coughs and other cold conditions. At bedtime, the kids took buckwheat (荞麦) honey, honey-flavored (蜂蜜味的) DM (one of the most common ingredients in cough medicines), or no treatment. Parents and kids in the no-

-treatment group knew they weren’t getting anything, but the other two groups weren’t told which treatment they were getting.

       The surveys showed that kids who swallowed about 2 teaspoons of buckwheat honey before bedtime coughed less and slept better than kids in the other groups. “When parents want something for their kids to take,” Paul says, “honey seems like the best option”.

       But what gives honey its healing power? Substances called antioxidants (抗氧化剂) may be part of the answer. All honey contains antioxidants that protect our cells from damage. Studies show that antioxidant levels in the body rise after someone swallows honey.

Which of the following can be the best title for this passage?

A. No cough medicines to children    

B. Sweet solution to kids’ coughing

C. Best treatment for your cold   

D. Cough medicines don’t work  

We can learn from Paragraph 2 that coughing ______.

A. sometimes does good to people 

B. can cure lung and throat diseases

C. is more harmful to children  

D. helps improve children’s diet   

During Paul’s experiment, the kids who received treatment ______.

A. seemed much worse than before 

B. knew they weren’t getting anything 

C. coughed less and slept better

D. had no idea what they swallowed