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. 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 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 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. 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 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 four-year study of 200 college students found that those who drink heavily and started drinking at an early age demonstrate poor decision-making skills, just like long-term, chronic(长期的) alcoholics. Researchers at the University of Missouri-Columbia believe early onset binge drinking negatively affects psychological development.
The researches examined college students between the ages of 18 and 22. After three years, they tested them using the Iowa Gambling Test, which measures the tendency to make immediate (disadvantageous) or long-term (advantageous) choices.
Based on the students’ reported drinking habits, they were grouped into four categories: low binge drinkers, moderate binge drinkers, increasing binge drinkers and stable or high binge drinkers.
“Students in the stable or high alcohol use category, who had longer histories of binge drinking, made riskier and less advantageous choices, which reflect problems associated with planning for the future,” the researchers reported.
The study also found that only students who started binge drinking when they were younger showed impairment on the task.
“There is reason to think that heavy binge drinking during adolescence, when the brain is still rapidly developing, may have some negative legacy (遗传) on psychological development,” said Kenneth J. Sher of MU’s Midwest Alcoholism Research Center in a news release. “The interesting thing is that if we were to just look at binge drinkers and how impaired they are in the decision-making process as juniors, we’d really be obscuring(使模糊) the important issue, which is how long they’ve been binge drinkers and / or how early they started.”
【小题1】What does the passage mainly tell us?

A four-year study of 200 college students found that those who drink heavily and started drinking at an early age demonstrate poor decision-making skills, just like long-term, chronic(长期的) alcoholics. Researchers at the University of Missouri-Columbia believe early onset binge drinking negatively affects psychological development.

The researches examined college students between the ages of 18 and 22. After three years, they tested them using the Iowa Gambling Test, which measures the tendency to make immediate (disadvantageous) or long-term (advantageous) choices.

Based on the students’ reported drinking habits, they were grouped into four categories: low binge drinkers, moderate binge drinkers, increasing binge drinkers and stable or high binge drinkers.

“Students in the stable or high alcohol use category, who had longer histories of binge drinking, made riskier and less advantageous choices, which reflect problems associated with planning for the future,” the researchers reported.

The study also found that only students who started binge drinking when they were younger showed impairment on the task.

“There is reason to think that heavy binge drinking during adolescence, when the brain is still rapidly developing, may have some negative legacy (遗传) on psychological development,” said Kenneth J. Sher of MU’s Midwest Alcoholism Research Center in a news release. “The interesting thing is that if we were to just look at binge drinkers and how impaired they are in the decision-making process as juniors, we’d really be obscuring(使模糊) the important issue, which is how long they’ve been binge drinkers and / or how early they started.”

1.What does the passage mainly tell us?

A．Four categories of heavy drinkers.

B．Heavy drinking affects college students.

C．Early onset binge drinkers are poor at decision-making.

D．People drinking at an early age will develop into binge drinkers.

2.Which category would make the most disadvantageous choice?

A．Low binge drinkers                      B．moderate binge drinkers

C．Increasing binge drinkers                 D．Stable binge drinkers

3.Early onset binge drinking negatively affects psychological development because _______.

A．adolescent students were not suitable for drinking

B．drinking too much will slow the growth of the brain

C．the brain has not fully developed during adolescence

D．drinking will make the students make dangerous choices

4.What Kenneth J. Sher says suggests that _______.

A．he is quite clear about what the important issue is

B．if binger drinkers started late, there would be no bad effect

C．the important issue is how impaired the students are in decision-making

D．only early binge drinkers will have their decision-making ability affected

Steve, a twelve-year-old boy with alcoholic parents, was about to be lost forever, by the U.S. education system. He had been failing since first grade. Steve was a big boy, looking more like a teenager than a twelve year old, yet, Steve went unnoticed... until Miss White.
Miss White was a smiling, young, beautiful redhead, and Steve was in love! For the first time in his young life, he couldn’t take his eyes off his teacher; yet, still he failed. He never did his homework, and he was always in trouble with Miss White. His heart would break he was punished for failing to turn in his homework! Still, he did not study.
    In the middle of the first term of school, the entire seventh grade was tested for basic skills. Steve hurried through his tests, and continued to dream of other things.  His heart was in the woods, where he often escaped alone, trying to shut out the sights, sounds and smells of his alcoholic home. 
One day, Miss White’s impatient voice broke into his daydreams.
“Steve!” he turned to look at her.
“Pay attention!”
Steve locked his eyes on Miss White with adolescent adoration, as she began to go over the test results for the seventh grade.
“You all did pretty well,” she told the class, “except for one boy, and it breaks my heart to tell you this, but...” She hesitated.
“...The smartest boy in the seventh grade is failing my class!”
She just stared at Steve, as the class turned around for a good look. Steve dropped his eyes and carefully examined his fingertips.
After that, it was war!! Steve still wouldn’t do his homework even as the punishments became more severe.
“Just try it! ONE WEEK!” He was unmoved.
You’re smart enough! You’ll see a change!” Nothing happened.
“Give yourself a chance! Don’ give up on your life!” Nothing.
“Steve! Please! I care about you!”
Wow! Suddenly, Steve got it!! Someone cared about him? Someone, totally perfect, CARED ABOUT HIM!
Steve went home from school, thoughtful, that afternoon.  He, quickly, gathered up his camping things, this time including his schoolbooks. Determined, he headed for the woods.
The following Monday he arrived at school on time, and he waited for Miss White to enter the classroom. She walked in, all sparkle and smiles! God, she was beautiful! He expected her smile to turn on him. It did not.
Miss White, immediately, gave a quiz on the weekend homework. Steve hurried through the test, and was the first to hand in his paper. With a look of surprise, Miss White took his paper. Obviously puzzled, she began to look it over. Steve walked back to his desk, his heart beating within his chest. As he sat down, he couldn’t resist another look at the lovely woman.
Miss White’s face was in total shock! She glanced up at Steve, then down, then up. Suddenly, her face broke into a bright smile. The smartest boy in the seventh grade had just passed his first test!
From that moment nothing was the same for Steve. Life at home remained the same, but life still changed. He discovered that not only could he learn, but he was good at it! And he continued this course throughout his school life.
After high-school Steve entered the Navy, and he had a successful military career.  During his Naval career, he inspired many young people, who without him, might not have believed in themselves.
You see, it’s simple, really. A change took place within the heart of one boy, all because of one teacher, who cared.                          
1. How did Miss White’s expression change when she got Steve’s paper?   
A. satisfied —shocked —surprised —puzzled        B. puzzled —surprised —shocked —satisfied
C. surprised —puzzled —shocked —satisfied             D. surprised —shocked —satisfied —puzzled
2. Which of the following statements is NOT right according to the passage? 
A. Steve fell in love with Miss White at the first sight of her.
B. Steve’s parents were so addicted to drinking that they paid little attention to Steve’s life.
C. Steve would rather stay in the woods to keep himself away from his home.
D. Having being punished many times, Steve determined to work hard and passed his first test.
3. Which of the following can serve as the best title for this passage?
A. The difference a teacher can make                        B. The school life of a stubborn boy
C. The importance of family education                      D. The skills of being a good teacher