Insomnia is the inability to fall asleep or sleep restfully．It is a problem to nearly everyone at some time ．A person may be awake for an hour in the middle of the night and then , next morning, feel that he hardly sleep all night Normally, worry about not getting enough sleep is the worst aspect of most insomnia．If insomnia is recurrent, however, it is important to find its causes and try to correct them, with the help of a doctor if necessary．
Any of a large number of simple factors may take it difficult for someone to fall asleep or remain asleep．His matters may be too soft or too hard．If there are too many blankets on a hot night, he may be too warm; if the bedclothes are too light he may feel cold during the night．If it is not dark enough, or too noisy, this may cause difficulty in sleeping．Eating shortly before going to bed also be responsible for insomnia．Stimulating drinks, such as tea or coffee, can also keep people awake．
Inability to fall asleep is sometimes a symptom of emotional or mental disorders．Insomnia may also be caused by pain and, very rarely, it can be a symptom of a physical disease．
The cause of insomnia may be easy to correct．The sufferer should check the mattress, bedclothes and bedroom temperature, and make any necessary changes．An eye mask keeps out the night and ear-plugs shut out sound．He should relax for an hour or two before bedtime, perhaps by reading a book; watching TV, or taking a warm bath．If he wakes during the night he should try turning on the light and reading for a while．Taking warm milk and a biscuit or two may be helpful．Above all, he should try not to worry about sleeplessness when someone is tied enough he nearly always falls asleep．
If necessary, a doctor may prescribe tranquillizers or sleeping pills．Take only the dosage he prescribes; any more is dangerous．
67．According to the writer, insomnia is ______．
A．a rare problem                       B．a sign of illness
C．a common complaint                  D．a modern disease
68．Which of the following statements is not the cause of insomnia?
A．too many blankets on a hot night      B．drinking juice
C．emotional or mental disorders         D．physical pain
69．Insomnia needn’t be taken seriously because_______．
A．people can catch on sleep during the day．
B．many people sleep far too much．
C．it can easily be cured by doctors．    
D．it is cured naturally by tiredness．
70．The main cure for insomnia is_____．
A．reading a book at night               
B．having sleeping pills
C．watching television before bedtime     
D．not to get too anxious about sleeping

Several recent studies have found that being randomly (随机地) assigned to a roommate of another race can lead to increased tolerance but also to a greater likelihood (可能性)of conflict.

Recent reports found that lodging with a student of a different race may decrease prejudice and cause students to engage in more ethnically diverse friendships.

An Ohio State University study also found that black students living with a white roommate saw higher academic success throughout their college careers. Researchers believe this may be caused by social pressure.

In a New York Times article, Sam Boakye – the only black student on his freshman year floor -said that "if you're surrounded by whites, you have something to prove."

Researchers also observed problems resulting from pairing interracial students in residences.

According to two recent studies, randomly assigned roommates of different races are more likely to experience conflicts so strained that one roommate will move out.

An Indiana University study found that interracial roommates were three times as likely as two white roommates to no longer live together by the end of the semester.

Grace Kao, a professor at Penn said she was not surprised by the findings. "This may be the first time that some of these students have interacted, and lived, with someone of a different race," she said.

At Penn, students are not asked to indicate race when applying for housing.

"One of the great things about freshman housing is that, with some exceptions, the process throws you together randomly," said Undergraduate Assembly chairman Alec Webley. "This is the definition of integration."

"I've experienced roommate conflicts between interracial students that have both broken down stereotypes（老一套，模式） and reinforced stereotypes," said one Penn resident advisor (RA). The RA of two years added that while some conflicts "provided more multicultural acceptance and melding (融合)," there were also "jarring（不和谐的）cultural confrontations（对抗）."

The RA said that these conflicts have also occurred among roommates of the same race.

Kao said she cautions against forming any generalizations based on any one of the studies, noting that more background characteristics of the students need to be studied and explained.

1.What can we learn from some recent studies?

A．Conflicts between students of different races are unavoidable.

B．Students of different races are prejudiced against each other.

C．Interracial lodging does more harm than good.

D．Interracial lodging may have diverse outcomes.

2.What does Sam Boakye's remark mean?

A．White students tend to look down upon their black peers.

B．Black students can compete with their white peers academically.

C．Black students feel somewhat embarrassed among white peers during the freshman year.

D．Being surrounded by white peers motivates a black student to work harder to succeed.

3.What does the Indiana University study show?

A．Interracial roommates are more likely to fall out.

B．Few white students like sharing a room with a black peer.

C．Roommates of different races just don't get along.

D．Assigning students' lodging randomly is not a good policy.

4.What does Alec Webley consider to be the "definition of integration"?

A．Students of different races are required to share a room.

B．Interracial lodging is arranged by the school for freshmen.

C．Lodging is assigned to students of different races without exception.

D．The school randomly assigns roommates without regard to race.

5.What does Grace Kao say about interracial lodging?

A．It is unscientific to make generalizations about it without further study.

B．Schools should be cautious when making decisions about student lodging.

C．Students' racial background should be considered before lodging is assigned.

D．Experienced resident advisors should be assigned to handle the problems.

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Everyone feels happiness, surprise, fear, sadness and anger at some time—these are the basic emotions. It’s normal to have these feelings sometimes! There are over 600 words in English to describe them and we use the muscles(肌肉) in our faces to express them.

  Emotions enable us to react to situations—for example, anger will set your heart racing, and feeling happy will make you smile. One of the key areas of your brain that deals with showing, recognizing, and controlling the body’s reaction to emotions is known as the limbic system (中枢边缘系统).

 When remembering an emotional event, you recall not only what happened, but also how you felt. Both sorts of memory can be caused by something you heard, saw and even smelt, at the time. Scientists think that you store early emotional memories, even if you can’t remember what actually happened.

Taking the time to recognize, understand, and express how we feel is the right thing to do. When we are able to express our emotions properly, we think hand act in a better way. We have better relationships with our parents, family and friends. We understand ourselves, and others understand us. And it feels so good!

  The way we feel affects our thoughts and actions, and it is impossible to separate our feelings from the things we think and do! Therefore, it is important to be aware of our feeling and to respond to them in the right way. Feelings like anger and fear are not our enemies! We should not keep them deep inside. Instead, we should understand them and direct them in the proper way.

Food sometimes gets poisoned with harmful things. A person who eats such food can get an illness called food poisoning. Food poisoning is usually not serious, but some types are deadly, The symptoms of food poisoning usually begin within hours of eating the poisoned food. Fever is one of the most common symptoms.
Certain microorganisms (微生物) cause most types of food poisoning. Bacteria and other microorganisms can poison eggs, meat, vegetables, and many other foods. After entering the body, these tiny living things release (释放) poisons that make people sick.
Some chemicals can also cause food poisoning. They are often added to food while it is being grown, processed, or prepaid. For example, many farmers spray chemicals on crops to kill weeds and insects. Some people may have a bad reaction to those chemicals when they eat the crops.
Some plants and animals contain natural poisons that are harmful to people. These include certain kinds of seafood, grains, nuts, seeds, beans, and mushrooms.
When people handle food properly, the risk of food poisoning is very small Microorganisms multiply rapidly in dirty places and in warm temperatures. This means that people should never touch food with dirty hands or put food on unwashed surfaces. Food should be kept in a refrigerator to stop microorganisms from growing. Meat needs to be cooked thoroughly to kill any dangerous microorganisms. People should also wash food covered with chemicals before eating it. Finally, people should not eat raid mushrooms or other foods that grow in the wild. Some of these foods may contain natural materials that are poisonous to humans. In addition, some types of fish can be poisonous.
Most people recover from food poisoning after a few days of resting and drinking extra water. If people eat natural poisons, they must go to the hospital right away to have their stomachs emptied.
【小题1】Which of the following statements is NOT true?

   Happiness, rather than working hard, is the key to success, according to research published yesterday. Cheerfu1 peop1e are more 1ikely to try new things and challenge（wk战） themselves， which strengthens their good emotion and leads to success in work，good relationships and strong health，say psychologists（心理学家）.

   The findings suggest that happiness is not a “ feel-good” luxury（奢侈品），but is necessary for people’s well-being. What is more, happiness can also reach an entire nation，with people in” happy” nations being more likely to help others.

   The link between happiness and success was studied by a team from the University of California Riverside，led by Professor Sonja Lyubomirsky.

   First, they examined questionnaires that ask peop1e about their 1ives. “ For example, they show that happy people are likely to earn higher incomes” said Lyubomirsky. Having established the link，they wanted to discover the cause.

   “Almost always it has been taken for granted that things that connect closely to happiness are the causes of happiness，but it could be just the opposite that those things are likely to be caused by happiness，” said Professor Ed Diener from the University of Illinois，another author on the paper.

   “ There was strong evidence that happiness leads people to be more sociable，more generous and more productive at work，to make more money，and to have stronger immune（免疫）systems，”said Lyubomirsky.

   The research shows that while success can put a spring in someone’s step，peop1e need happiness in the first place to achieve success.

   According to the study， around 4 out of 5 people in modern industrialized nations arc happy at any one time.

   Success was not just about earning lots of money. “ We describe success as having the things that culture or society values，whether it be friends，close family, money and income，or long life，”said Diener.

    However，sorrowful people arc not predetermined to lead a life of failure.

In this passage，which of the following viewpoints does Professor Lyubomirsky state？

  A. People in less happy countries are more likely to help others.

  B. Things connected to happiness are brought about by happiness.

  C. Happiness results in richer and healthier people.

  D. Success means possessing things that a cu1ture or society thinks highly of.

The underlined phrase “ put a spring in someone’s step” means          .

  A. put you in good spirits            B. put spring water on your feet

  C. have a pleasant walk in spring      D. step into a cheerful spring

According to the passage，which of the following is true？

  A. People arc happy because they earn more money.

  B. People earn more money because they are happy.

  C. Working hard is important for being successful.

  D. We can do whatever we like as 1ong as we feel happy.

We can infer from the passage that          .

  A. fee1ing good is a cause and not an effect of achievement

  B. our life would be a failure if we were not happy

  C. happiness is just a personal problem

  D. being successful mainly means being wealthy