Peanut allergies (过敏) are among the most common and most dangerous of food allergies. A tiny exposure to peanuts can mean big trouble for a person with a peanut allergy—not just sneezing or coughing，but something as potentially deadly as narrowing of the airways.
But a recent study suggests that some children may be able to beat back their allergic reactions to peanuts by gradually introducing trace amounts of the nut into their diets. It's too early to say for certain，so if you have a peanut allergy，do not try this at home. But the first results look promising.
Two teams of scientists have been experimenting on a group“of 29 children who are allergic to peanuts”At the beginning of the study，each kid received less than 1/1，000 of a peanut per day. (Imagine splitting a peanut into 1，000 parts!) Over the course of the study， the children gradually increased the amount of the peanut in their diets
Nine of the children have been receiving the treatment for two years，and five of those nine now appear to be free of their peanut allergies，and can eat peanuts with no problem. But the other four have not benefited so much from the therapy（治疗）.
The two teams of scientists are now doing a follow-up study on two groups of children with the allergy. Children in one group will receive the new therapy，while the others will not. Researchers hope this study will help them learn if the therapy truly does work.
Scientists don't understand why some people get peanut allergies and others don't，but are trying to find a way to help people with the allergy. Because of the severity of some peanut allergies，scientists want to know the answer as soon as possible. “This is very encouraging， but remember，it's not something you try at home，”says one of the researchers.
68.According to the passage，the peanut allergy .
A. can be deadly if only a small amount is used
B. causes a lot of trouble for many parents
C. allows people to eat only small amounts of peanuts
D. is considered the least common and dangerous food allergy
69.Scientists are trying to treat peanut allergies by .
A. exposing children with the allergy to as many peanuts as possible
B. changing the eating habits of children with peanut allergies gradually
C. giving children Peanuts in slowly increasing amounts
D. exploring ways to resist the feelings caused by peanut allergies
70.The experiment shows that .
A. people with peanut allergies can't use small amounts of peanuts in their diets.
B. children are more easily cured than adults
C. all children can be cured of their peanut allergies if given more time of treatment
D. about 55-percent children with peanut allergies have been cured
71. Scientists are now doing a follow-up study in order to .
A. explore why some people get the illness while others don’t
B. show whether peanut allergies can really be dangerous
C. check whether the therapy really works or not
D. explore whether the allergy can be cured without treatment
Every American family has its own traditions on Thanksgiving Day, and mine is no different. Once the national holiday arrives, my mom rises early to make the meal. She puts a turkey in the oven, chops carrots and bakes pies. I’m sorry to say that the men in the family – my dad, my younger brother and myself – rarely pitch in to help. Our job is to wash the mountain of dirty dishes after the meal is over.
Around 2 pm every Thanksgiving Day, family members seat themselves around the kitchen table. Plates of turkey, vegetables, salad, rolls and pies cover it. At this point, we can hardly keep ourselves from drooling (流口水) all over our fancy clothes, but it’s not yet time to eat.
First, we must bow our heads, close our eyes and say a prayer of thanks aloud to God for giving us everything we have. Under normal circumstances, I would have no problem making a list of things I am thankful for. I grew up in a loving family. My parents, who aren’t wealthy, took out loans to help me pay for university.
But, the funny thing is, every time I sit down for Thanksgiving dinner and try to say a prayer of thanks, my mind usually goes blank. I think it has something to do with my growling (咕咕叫) stomach and all of that food sitting right there under my nose.
Eventually, though, we all finish our short prayers and dig in. To be sure, the day includes other highlights – visiting with family and watching football. But usually around 6 pm we are all ourselves stuffed like turkeys and thankful to have a nice warm bed to sleep in. The purpose of the text is to ________.
| A．tell what the family do for Thanksgiving Day |
| B．tell how the family spends Thanksgiving Day |
| C．introduce foods served on Thanksgiving Day |
| D．introduce the American Thanksgiving Day |
On Thanksgiving Day the author’s family do the following except ________.
| A．watching a movie | B．making visits |
| C．having a big meal | D．watching football |
Why does the author’s mind usually “go blank” when saying a prayer of thanks?
| A．He is too thankful to say a word. |
| B．His mind is on the food before him. |
| C．He feels too excited to speak. |
| D．He is shy to speak in public. |
The underlined phrase “dig in” in the last paragraph is closest in meaning to “________”.
| A．chat with others | B．make a hole |
| C．mix things up | D．start eating |
What can we conclude from the text?
| A．On Thanksgiving Day, men do nothing but eat. |
| B．The author is a middle school student. |
| C．The author’s family is not rich, but it’s a loving one. |
| D．Thanksgiving Day falls on Thursday of December. |
Stepfamilies are commonplace in the United States and their number continues to grow．While stepfamilies differ widely in their make-up， they all consist of a parenting couple and children， one or more of whom is of a previous union．Such combinations of his kids， her kids， and then， possibly， kids of the new union make for complicated and often trying difficulties， more challenging than those of traditional families．
Since stepfamilies involve more people and， consequently， more potential problems from the start than do childless new marriage， it is wise for the couple to do some careful planning prior to （＝before） marriage．Not only do the prospective（预期的） marital partners need agreement about their own carriers， life goals， finance and special interests， they must also prepare for new relationship with their children and attempt to accommodate their individual needs and feelings．Furthermore， there are often the rights of other relatives to consider．
As for any family， the basic ingredient（成分） of a successful stepfamily are affection， kindness and mutual（相互的） respect．However， love alone is not enough．Certainly love is the cornerstone upon which the foundation of any family is built， but there are also many other important ingredients involved in building a successful stepfamily．
Surveys reveal that successful families regard the ability to communicate openly as the most important factor in their success．Communication is what keeps families on track and functioning as a unit．Although healthy communication is easier for some people than for others， this skill can be learned and improved．Healthy communication involves speaking clearly and listening carefully．
By their very nature， stepfamilies often are complicated by past events that give rise to ambivalent（矛盾的） loyalties， lingering（持久的） hurts， fears， feelings of guilt and unrealistic dreams．The difficulties that arise within the stepfamilies are human and understandable．However， there are ways to confront（面临） and resolve them．For example， support groups and professional counselors（法律顾问） are available in most communities to provide help and guidance when communications stopped and problems seem overwhelming（压倒性的）．
Planning and building a stepfamily is not a responsibility to take lightly．It can be a very trying and， at times， seemingly impossible effort．Many potential troubles can arise and threaten to destroy the stepfamily．Nevertheless， meeting and mastering these special challenges can bring unexpected satisfactions and rewarding depths of family closeness and affection．According to the passage， there are in the United States．
| A．no stepfamilies | B．more stepfamilies than ever before |
| C．fewer stepfamilies than ever before | D．fewer stepfamilies than traditional ones |
Which of the following can help avoid the potential problems arising in a stepfamily？
| A．The pursuit of the same careers． | B．Professional interventions（干涉）． |
| C．The development of special interests． | D．Careful planning before the marriage． |
Many people believe that contributes most to the building of a successful stepfamily．
| A．everlasting loyalties | B．open communication |
| C．kindness and mutual respect | D．persistent（持久稳固的） affection |
It is natural for a stepfamily to be ．
| A．unrealistic | B．complicated | C．ambivalent | D．guilty |
According to the author， planning and building a stepfamily is ．
| A．impossible | B．satisfying and rewarding |
| C．discouraging and frustrating | D．a difficult and trying experience |
Researchers found that people become happier and experience less worry after they reach the age of fifty．In fact, they say by the age of eighty-five, people are happier with their life than they were when they were eighteen years old．
The findings came from a survey of more than 340,000 adults in the United States．The Gallup（民意调查） Organization questioned them by telephone in 2008．At that time, the people were between the ages of eighteen and eighty-five．
The researchers asked questions about emotions like happiness, sadness and worry．They also asked about mental or emotional stress．
Arthur Stone at Stony Brook University in New York led the study．His team found that levels of stress were highest among adults between the ages of twenty-two and twenty-five．The findings showed that stress levels dropped sharply after people reached their fifties．Happiness was highest among the youngest adults and those in their early seventies．The people least likely to report feeling negative emotions were those in their seventies and eighties．
Researchers say they do not know why happiness increases as people get older．One theory is that, as people grow older, they grow more thankful for what they have and have better control of their emotions．They also spend less time thinking about bad experiences．
Professor Stone says the emotional patterns could be linked to changes in how people see the world, or maybe even changes in brain chemistry．
The researchers also considered possible influences like having young children, being unemployed or being single．But they found that influences like these did not affect the levels of happiness and well-being related to age．
The study also showed that men and women have similar emotional patterns as they grow older．However, women at all ages reported more sadness, stress and worry than men．What can be the best title of the text?
| A．Happiness Varies with Ages | B．Experience More, Worry Less |
| C．The Older, the Wiser | D．Being Young, Being Happy |
We can learn from the research that _________．
| A．only when people get older will they feel happier |
| B．stress levels among the youngest are the highest |
| C．older people tend to be grateful |
| D．older people usually have no worries |
According to the research, when people get older, _________．
| A．they miss the old days | B．they are physically weak |
| C．they have better self-control | D．they are more emotional |
What would the author probably talk about next?
| A．What influences happiness． | B．How to live better． |
| C．How to keep happier． | D．Why women are less happier． |
The author is intended to _________．
| A．advise how to reduce stress | B．introduce a scientific finding |
| C．describe how to do research | D．talk about human emotions |
SHANGHAI - Health experts in Shanghai are calling for more protection for young children as the latest research shows about half of the youngsters are suffering from secondhand smoke．
About 45 percent of children suffer passive smoking in families, 50 percent in public places, and almost 6 percent on public transportation, shows a research released by the Shanghai Children's Medical Center on Tuesday．
"Not only adults but also children and newborn babies are at risk for the adverse effects of passive smoking," said Tang Jingyan, a doctor at the Shanghai Children's Medical Center．
"Actually, those young children whose bodies are still growing and developing are more sensitive to the effects of secondhand smoke．"
Research has shown that children who are exposed to secondhand smoke will suffer from more colds, coughs and sore throats, and they are more likely to suffer from bronchitis, pneumonia and will have a higher risk of developing cancer．
Doctors even suggested that children suffering passive smoking are more likely to have behavioral problems and may not develop mentally as quickly as their peers．
Other research by the Shanghai Children's Medical Center has found that more than 80 percent of child patients in the center live in a smoke-filled household, where one or both parents smoke．
"Though doctors have stressed the harm of passive smoking over and over, it is still hard to reach a totally 'smoke free' home," said a pediatrician named Zhang Yiwen, noting that parents are often tempted to smoke even though they have learned the harmful effects of secondhand smoke．
China has 540 million people suffering from passive smoke, 180 million of them younger than 15．The age of smokers is also getting lower, earlier reports said．
"There are more young smokers than before．You can see young people wearing a school uniform and carrying a schoolbag light a cigarette on the street．Some of them are even female students," said Jing Xingming, a professor of children's developmental behavior at the center．
"Children like to imitate adults, especially their parents．If parents often smoke at home, it is very likely children will develop a smoking habit, which can cause a vicious circle," Jin said．
Reports from the Ministry of Health said China has about 350 million smokers, of whom 15 million are underage smokers．Also, around 40 million of the country's 130 million children aged between 13 and 18 had tried smoking, and 15 million had become addicted to tobacco．What is the main idea of the passage?
| A．About half of the youngsters are suffering from secondhand smoke． |
| B．Experts are calling for more protection for youngsters from smoking． |
| C．More and more youngsters are picking up the habit of smoking． |
| D．Smoking does great harm to the health of the youngsters． |
What kind of the youngsters most possibly develop a habit of smoking?
| A．Children of non-smoking mothers． |
| B．Children of non-smoking fathers． |
| C．Children of heavy smokers． |
| D．Children from some smoking centers． |
Which of the following disease may not be connected with secondhand smoking?
| A．Cancer． | B．Behavioral problems． |
| C．Sore throats． | D．Coughs． |
The underlined word "vicious" in the last paragraph but one most probably means ___________．
| A．complete | B．simple | C．great | D．bad |
What can be inferred from the passage?
| A．About 80% of the children in the Shanghai Children's Medical Center smoke heavily． |
| B．About 45 percent of children suffer passive smoking in the Shanghai Children's Medical Center． |
| C．About 540 million people are heavy smokers in China． |
| D．Children aged between 13 to 18 are more likely addicted to smoking． |
Most of the 20th century has been a development on the Industrial Revolution taken to an extreme: people now own more products than ever before; there are enough unclear weapons to destroy the earth several times over; there is hardly any forest left and pollution has got to the point where we buy water. Within a few years I predict you will be able to buy air. (There once was a time when you didn’t need to buy food or shelter either.)
Important developments in the last century are the breading down of the class structures left over from the Industrial Revolution stage, bringing with it the empowerment of the “common man ”: the working day is set by law to only 8 hours a day, everyone has the vote, the media has less obvious government control, people have landed on the moon, sent spacecrafts to Mars and so on. Families have also shrunk drastically（强烈地）; the nuclear family came about, and especially in the last half of the 20th century, one-parent families are becoming more common. This shrinking in the size of the family shows the increased independence of people—once upon a time people had to live in large groups to survive.
As humans have “become the gods”, they have realized their individuality and independence and taken their control of the world to an extreme. In many countries the land is almost completely used in the land is almost completely used in the production of food and as living space and they live in small cities which are entirely human constructed, made from materials which are also entirely human constructed(concrete, bricks) with hardly any remains of nature. Weeds are poisoned because they are messy; even parks have trees grown in tidy lines; grass is mowed to keep it short and so on. I think the massive drug “problem” troubling people is a result of too much of this influence, humans needing to escape the stark world they have created by entering fantasy worlds.
Over the last 100 years, the 20th century consciousness has spread throughout the world; most of Asia has been thoroughly “Westernized”, and most of the Third World is being overrun by western ways of doing things and living.What’s the author most concerned about?
| A．The influence of pollution. |
| B．Strong effects of development. |
| C．Changed positions of humans as gods. |
| D．The process of the Industrial Revolution. |
What is the author’s attitude towards the changes of the 20th century?
| A．Objective. | B．Tolerant. | C．Vague. | D．Negative. |
What does the underlined word “stark” in Paragraph 3 mean?
| A．Unfair. | B．Illegal. | C．Dull. | D．Violent. |
What can be inferred from the passage?
| A．Men’s individuality is over controlled. |
| B．People have damaged nature too much. |
| C．Men’s independence is partially limited. |
| D．People show concern for nuclear families. |
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