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.

Many college students have after-school jobs. Students both go to school and have a job at the same time. Every student has his or her own reason for having an after-school job. The most common reason is to help pay for college. In the US, going to a college or university may be very expensive. Not only must students pay for classes, they must also pay for a place to live, food, and other expenses. Buying books for classes can also be very expensive. Students spend as much as five hundred US dollars on books. Many parents do not have enough money to pay all of these expenses, so the students must get an after-school job to help pay for his or her education.?

Other students have after-school jobs not to pay for college, but to make and save a little money. Even after all of the school fees are paid, students often have many other expenses. Also, students like to go out and have fun. They may want to do anything from shopping to going to music concerts, to going out to bars and drinking with friends. Though it can be a lot of fun to do all of these things, you can not participate if you do not have money. Because of this, many students try to find jobs so that they can have fun as well as study.?

Some students get after-school jobs simply to gain more experience. If a student has never worked before, he or she can have the opportunity to have his or her first job. If a student is interested in banking, he or she may spend a few hours every week working at a ?local? bank. If a student is interested in working in a library after he or she graduates from college, the student can often find a job at the college library. There are many job opportunities for students who are interested in gaining experience in the area his or her choice.?

Though some people feel that after-school jobs take away from a student's time to do his or her homework, working is a great learning experience that happens outside of the ?classroom, and can provide many new opportunities for the students.

After reading the passage, we know that, besides paying for college education, American students have after-class jobs to _______.

A. make or save a little money and gain some experience?

B. simply earn some money?

C. support his or her family?

D. have fun only?

In the third paragraph the purpose of giving examples is _______.

A. to say that they have no choice but to do some jobs in college?

B. to show that the students are interested in working in banks and libraries?

C. to show that working in a bank or a library is the best way to earn money?

D. to explain how the students gain experience from after-school jobs ?

The best title for this passage is _______.

A. To Get an After-school Job for Fun

B. Getting an After-school Job for Your Education?

C. After-school Jobs

D. Experience Is Very Important for Your Job??

Many college students have after-school jobs. Students both go to school and have a job at the same time. Every student has his or her own reason for having an after-school job. The most common reason is to help pay for college. In the US, going to a college or university may be very expensive. Not only must students pay for classes, they must also pay for a place to live, food, and other expenses. Buying books for classes can also be very expensive. Students spend as much as five hundred US dollars on books. Many parents do not have enough money to pay all of these expenses, so the students must get an after-school job to help pay for his or her education.?

Other students have after-school jobs not to pay for college, but to make and save a little money. Even after all of the school fees are paid, students often have many other expenses. Also, students like to go out and have fun. They may want to do anything from shopping to going to music concerts, to going out to bars and drinking with friends. Though it can be a lot of fun to do all of these things, you can not participate if you do not have money. Because of this, many students try to find jobs so that they can have fun as well as study.?

Some students get after-school jobs simply to gain more experience. If a student has never worked before, he or she can have the opportunity to have his or her first job. If a student is interested in banking, he or she may spend a few hours every week working at a ?local? bank. If a student is interested in working in a library after he or she graduates from college, the student can often find a job at the college library. There are many job opportunities for students who are interested in gaining experience in the area his or her choice.?

Though some people feel that after-school jobs take away from a student's time to do his or her homework, working is a great learning experience that happens outside of the ?classroom, and can provide many new opportunities for the students.

After reading the passage, we know that, besides paying for college education, American students have after-class jobs to _______.

A. make or save a little money and gain some experience?

B. simply earn some money?

C. support his or her family?

D. have fun only?

In the third paragraph the purpose of giving examples is _______.

A. to say that they have no choice but to do some jobs in college?

B. to show that the students are interested in working in banks and libraries?

C. to show that working in a bank or a library is the best way to earn money?

D. to explain how the students gain experience from after-school jobs ?

The best title for this passage is _______.

A. To Get an After-school Job for Fun

B. Getting an After-school Job for Your Education?

C. After-school Jobs

D. Experience Is Very Important for Your Job??

    A few years ago I had an“aha!”moment regarding handwriting．

    I had in my hand a sheet of paper with handwritten instructions on it for some sort of editorial task．It occurred at first that I did not recognize the handwriting，and then I realized whose it must be．I finally became aware of the fact that I had been working with this colleague for at least a year，maybe two，and yet I did not recognize her handwriting at that point．

    It was a very important event in the computerization of life―a sign that the informal．friendly communication of people working together in an office had changed from notes in pen to instant messages and emails．There was a time when our workdays were filled with little letters，and we recognized one another's handwriting the way we knew voices or faces．

    As a child visiting my father’s office，I was pleased to recognize，in little notes on the desks of his staff，the same handwriting I would see at home in the notes he would leave on the fridge― except that those notes were signed“dad”instead of“RFW”．

    All this has been on my mind because of the talk about The Rise and Fall of Handwriting，a book by Florey．She shows in her book a deep concern about the fall of handwriting and the failure of schools to teach children to write well，but many others argue that people in a digital age can’t be expected to learn to hold a pen．

    I don’t buy it．

    I don’t want to see anyone cut off from the expressive，personal associations that a pen still promotes better than a digital keyboard does．For many a biographer，part of really getting to know their subjects is learning to read their handwriting．

    What some people advocate is teaching one of the many attractive handwritings based on the handwriting of 16th―century Italy．That may sound impossibly grand―as if they want kids to learn to draw by copying classical paintings．However，they have worked in many school systems．

51．Why was the author surprised at not recognizing his colleague’s handwriting?

    A．He had worked with his colleague long enough．

    B．His colleague’s handwriting was so beautiful．

    C．His colleague’s handwriting was so terrible．

    D．He still had a lot of work to do．

52．People working together in an office used to ____________．

    A．talk more about handwriting

    B．take more notes on workdays

    C．know better one another's handwriting

    D．communicate better with one another

53．The author’s father wrote notes in pen _________．

    A．to both his family and his staff

    B．to his family in small letters

    C．to his family on the fridge

    D．to his staff on the desk

54．According to the author，handwritten notes _______．

    A．are harder to teach in schools

    B．attract more attention

    C．are used only between friends

    D．carry more message

55．We can learn from the passage that the author __________．

    A．thinks it impossible to teach handwriting

    B．does not want to lose handwriting

    C．puts the blame on the computer

    D．does not agree with Florey

A mobile phone is in fact a small radio.A radio sends a person’s voice over a long way to another radio.A voice that is sent by radio is called a signal.A radio signal travels very quickly.

　 Only a few years ago，mobile phones were very large.They needed large batteries.They had to be powerful to send their signal to faraway places.This was because most cities had only one antenna tower for mobile phones.

　 Today’s mobile phones are small and easy to use.Now most cities have a lot of antenna towers，not just one.This means that each mobile phone doesn’t have to send its signal far away，so they don’t need to be so powerful.Mobile phones today use small batteries.A large city，where lots of mobile phones are used，can have hundreds of towers.

　 Do you know what use a mobile phone has? Yes，you can use it to do a lot of things.

　 Call your friends and family from almost anywhere.

　 Call the police immediately if there is an accident in the street.

　 Send or receive messages.

　 Sending short written messages is a popular way to use your mobile phone.Many people use short forms of words，so the messages are quick to write and read.Can you guess what these messages mean? Try reading them out.What do you hear?

　 RUOK?

　 CUL8r!

　 That’s EZ!

　 Will I C U B4 2moro?

　 That’s Gr8!

1.The writer talks about 　　　　 uses of a mobile phone.

　 A.three 　　　　 B.five 　　　　 C.seven 　　　　 D.nine

2.Why did the mobile phones need large powerful batteries some years ago?

　 A.Because most cities had only one antenna tower.

　 B.Because the mobile phones were too large.

　 C.Because the mobile phones could be used for a long time.

　 D.Because the mobile phones had to send their signal to faraway places.

3.What does the writer think of today’s mobile phones?

　 A.They are small but very powerful.

　 B.They are very popular and cheap.

　 C.They are very easy for us to use.

　 D.They are big enough to send a signal.

4.What does “Will I C U B4 2moro？” probably mean?

　 A.Will I see you before two past four in the morning?

　 B.Will I see you by 4∶02 in the morning?

　 C.Will I see you before tomorrow?

　 D.Will I see you by four tomorrow?

5.What does the writer write the article (文章) for?

　 A.To give us some common knowledge of the mobile phone.

　 B.To introduce how the mobile phone works and what use it has.

　 C.To tell us what short forms of words mean in written messages.

　 D.To show us in what way the mobile phone is expected to develop.