E
When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure—and so soon—that another ant is dead.
One scientist recently came up with a way to explain this ant behaviour. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I'm dead—take me away” when it is dead.
But there's a question to answer: As we know, if an ant is dead, it stops moving. But when an ant is sleeping or knocked unconscious, it is also not moving. However, other ants don't move the living ant out of the nest. How do they know this ant is not dead? Choe found that ants have another chemical on their bodies, which tells nearby ants something like
, “Wait—I'm not dead yet”when it is not dead. Choe suspects that when an ant dies, the chemical that says, “Wait I'm not dead yet”quickly goes away. When other ants detect the“dead”chemical without the“not dead yet”chemical, they move away the body.
To test his theory , Choe and his team put different chemicals on ants. When the scientists used the “I'm dead” chemical, other ants quickly moved the treated ant away. When the scientists used the“Wait—I'm not dead yet”chemical, other ants left the treated ant alone. Choe believes this behavior shows that the“not dead yet”chemical overrides the“dead” chemical when picked up by other ants. And that when an ant dies, the “not dead yet” chemical fades away. Other nearby ants then detect the remaining“dead”chemical and remove the body from the nest.
Understanding this behavior can help scientists figure out how to stop ants 
from invading new places and causing problems.
57. What is the function of the first paragraph?
A. Leading the following paragraphs.
B. Showing the main idea of the passage.
C. Introducing the background of the passage.
D. Giving a summary of the passage.
58. Which of the following has the closest meaning to the underlined word “overrides” in the fourth paragraph?
A.is weaker than B. is stronger than C. is better than D. is worse than
59. What can we learn from the passage?
A. Living ants can also be taken away when they are not moving.
B. When an ant dies, it can tell others using a certain chemical.
C. A living ant can pretend to be dead using a special chemical.
D. Ants often use chemicals to communicate with each other.
60. Which of the following descriptions about Dong-Hwan Choe is right?
A. Choe did this study in order to stop ants from invading new places.
B.
Choe is a biologist who is only interested in animals, especially in ants.
C. Choe first came up with an idea to explain this ant behavior，and then did some tests to prove his theory.
D. Choe did the research on this ant behavior on his own
Japan Earthquake and Tsunami(海啸)：How to Help
For readers interested in contributing to help victims of the earthquake and tsunami that struck Japan and the Pacific region，here is a list of contact information and links for some agencies that plan to provide relief.
THE JAPAN CENTER FOR INTERNATIONAL EXCHANGE
The Japan Center for International Exchange has set up the Japan NGO Earthquake Relief and Recovery Fund.Half of the money raised will go to support six Japanese NGOs currently at work in the disaster area and half will be retained to support the longer term recovery.
AMERICAN RED CROSS
Red Cross officials say donors can text REDCROSS to 90999 and a $10 donation will automatically be charged to donors’ phone bill，or donations can be made directly on its Web site.
B’NAI B’RITH INTERNATIONAL
To help the victims of the Japan earthquake and tsunami，donate online on the group’s secure Web site.
Or，by mail to：B’nai B’rith International Disaster Relief Fund，Attn：Japan Earthquake,2020 K Street，NW,7th Floor，Washington，D.C.,20006.
Or by phone：8005739057
CARE
CARE is one of the world’s largest private international humanitarian organizations.Their offices in Asia are on high alert(警戒) and have ensured that staff are informed of the tsunami warnings and other related developments.(Updated information on CARE’s work in Japan is available here.)
GLOBALGIVING.ORG
GlobalGiving is working with International Medical Corps，Save the Children，and other organizations on the ground to disburse(支付) funds to organizations providing relief and emergency services to victims of the earthquake and tsunami.Donors can text JAPAN to 50555 to give$10，and larger donations can be submitted on GlobalGiving’s Web site.
THE SALVATION ARMY
The Salvation Army has been providing food and shelter to Tokyo commuters(每日往返上班者) who were stranded when public transportation was interrupted by the earthquake.They are to send a team to Sendai，a city about 250 miles away from Tokyo，to assess the situation there.Text JAPAN or QUAKE to 80888 to make a $10 donation.(Make sure to respond “YES” to the thankyou message you receive.) Donations can also be made on the organization’s Web site or by calling 1800SALARMY.If you want to make donations to the victims by phone，you can text REDCROSS to ________.
| A．90999 | B．80888 |
| C．50555 | D．20006 |
What do we know about CARE from the text?
| A．It opened a Person Finder Page online. |
| B．It is the world’s largest humanitarian organization. |
| C．It raised much money to support six Japanese NGOs. |
| D．It warned its staff in Asia of the danger of tsunami. |
Which group can provide food and shelter?
| A．THE SALVATION ARMY. |
| B．GLOBALGIVING.ORG. |
| C．B’NAI B’RITH INTERNATIONAL. |
| D．AMERICAN RED CROSS. |
The underlined word “stranded” in the last paragraph can be replaced by “________”．
| A．abandoned | B．seperated |
| C．crashed | D．delayed |
Jack Benny was one of the most famous names in show business.He was born in Chicago，Illinois，on February 14th,1894.His parents，Meyer and Emma Kubelsky，were religious Jews.They had moved to the United States from Eastern Europe.Benny was a quiet boy.For much of the time，his parents were busy working in his father’s store.As a child，Benny learned to play the violin.After finishing his school，he joined the Navy.He continued using his violin to perform for sailors.In one show he was chosen more for his funny jokes than for his skill with the violin.That experience made him believe that his future job was a comedian.
Benny developed a show personality that had all the qualities people dislike.He was known for being so stingy—he refused to spend any money unless forced to do so.On his shows Benny often spoke of his appearance，especially his baby blue eyes.As he grew older，he always claimed to be 39 years old.Benny rarely made jokes that hurt other people.Instead，he would let the other actors on the show tell jokes about him.
In real life，he was very giving and he was a person people liked having as their employer.Benny entered the new media of television in 1950.Five years later，he dropped his radio programme to spend more time developing his television show.At first his appearances on television were rare.By 1960 the Benny Show was a weekly television programme.It continued until 1965.Benny appeared in about twenty films during his life.A few became popular.But most were not.In 1963 Benny returned to Broadway for the first time since 1931.
Benny received many awards during his lifetime.Perhaps the one honour that pleased him most was that his hometown of Waukeegan named a school for him.This was a special honour for a man who had never finished high school.
Benny continued to perform.He died of cancer in 1974.At his funeral his friend Bob Hope said，“Jack Benny was stingy to the end.He gave us only eighty years.”Benny was determined to be a comedian after he ______.
| A．left high school |
| B．joined the Navy |
| C．performed in a show for the sailors |
| D．left the Navy for Broadway |
The underlined word “stingy” in Paragraph 2 can be replaced by “________”．
| A．clever | B．mean |
| C．outgoing | D．hardworking |
According to the text，on Benny’s shows，he ________.
| A．developed a good personality |
| B．played the violin skillfully |
| C．often referred to his appearance |
| D．said funny things that hurt others |
Which of the following statements is TRUE about Benny?
| A．He did a good job in show business. |
| B．His first appearance on TV was very successful. |
| C．Most of his films became wellknown to Americans. |
| D．He treated all his awards as nothing. |
The way people hold to the belief that a funfilled，painfree life equals happiness actually reduces their chances of ever attaining real happiness.If fun and pleasure are equal to happiness，then pain must be equal to unhappiness.But in fact，the opposite is true.More often than not，things that lead to happiness involve some pain.
As a result，many people avoid the very attempts that are the source of true happiness.They fear the pain inevitably (不可避免地) brought by such things as marriage，raising children，professional achievement，religious commitment and selfimprovement.
Ask a bachelor (单身汉) why he resists marriage even though he finds dating to be less and less satisfying.If he is honest，he will tell you that he is afraid of making a commitment.Certainly，commitment is quite painful.The single life is filled with fun，adventure，and excitement.Marriage has such moments，but they are not its most distinguishing (显著的) features.
Couples with infant (婴儿) children are lucky to get a whole night’s sleep or a threeday vacation.I don’t know any parent who would choose the word fun to describe raising children.But couples who decide not to have children never know the joys of watching a child grow up or of playing with a grandchild.
Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating realizations.It liberates time：now we can devote more hours to activities that can genuinely increase our happiness.It liberates money：buying that new car or those fancy clothes that will do nothing to increase our happiness now seems pointless.And it liberates us from envy：we now understand that all those who are always having so much fun actually may not be happy at all.According to the author，a bachelor doesn’t want to marry mainly because________.
| A．he is unwilling to take family responsibilities |
| B．he believes that life will be more cheerful if he remains single |
| C．he finds more fun in dating than in marriage |
| D．he fears it will put an end to all his fun adventure and excitement |
Raising children，in the author’s opinion，is________.
| A．a moral duty |
| B．a thankless job |
| C．a rewarding task |
| D．a source of inevitable pain |
To understand what true happiness is one must________.
| A．have as much fun as possible during one’s lifetime |
| B．make every effort to liberate oneself from pain |
| C．put up with pain under all circumstances |
| D．be able to distinguish happiness from fun |
What is the main idea of the passage?
| A．Happiness often goes hand in hand with pain. |
| B．One must know how to attain happiness. |
| C．It is important to make commitments. |
| D．It is pain that leads to happiness. |
Mothers and daughters go through so much—yet when was the last time a mother and daughter sat down to write a book together about it all? Perri Klass and her mother，Sheila Solomon Klass，both gifted professional writers，prove to be ideal cowriters as they examine their decades of motherhood，daughterhood，and the wonderful ways their lives have overlapped(重叠)．
Perri notes with amazement how closely her own life has mirrored her mother’s: both have fulltime careers; both have published books，articles，and stories; each has three children; they both love to read.They also love to travel—in fact，they often take trips together.But in truth，the harder they look at their lives，the more they acknowledge their big differences in circumstance and basic nature.
A child of the Depression(大萧条)，Sheila was raised in Brooklyn by parents who considered education a luxury for girls.Starting with her college education，she has fought for everything she’s ever accomplished.Perri，on the other hand，grew up privileged in the New Jersey suburbs of the 1960s and 1970s.For Sheila，wasting time or money is a crime，and luxury is unthinkable while Perri enjoys the occasional small luxury，but has not been successful at trying to persuade her mother into enjoying even the tiniest thing she likes.
Each writing in her own unmistakable voice，Perri and Sheila take turns exploring the joys and pains，the love and bitterness，the minor troubles and lasting respect that have always bonded them together.Sheila describes the adventure of giving birth to Perri in a tiny town in Trinidad where her husband was doing research fieldwork.Perri admits that she can’t sort out all the mess in the households，even though she knows it drives her mother crazy.Together they compare thoughts on bringing up children and working，admit longhidden sorrows，and enjoy precious memories.
Looking deep into the lives they have lived separately and together，Perri and Sheila tell their motherdaughter story with honesty，humor，enthusiasm，and admiration for each other.A written account in two voices，Every Mother Is a Daughter is a duet(二重奏) that produces a deep，strong sound with the experiences that all mothers and daughters will recognize. (2013·湖北，B)Why does Perri think that her own life has mirrored her mother’s?
| A．They both have gone through difficult times. |
| B．They have strong emotional ties with each other. |
| C．They have the same joys and pains，and love and bitterness. |
| D．They both have experiences as daughter，mother and writer. |
The word “luxury” in Paragraph 3 means________.
| A．something rare but not pleasant |
| B．something that cannot be imagined |
| C．something expensive but not necessary |
| D．something that can only be enjoyed by boys |
What is Paragraph 4 mainly about?
| A．The content of the book. |
| B．The purpose of the book. |
| C．The influence of the book. |
| D．The writing style of the book. |
How are women’s lives explored in this book?
| A．In a musical form. |
| B．Through field research. |
| C．With unique writing skills. |
| D．From different points of view. |
Most people are aware that outdoor air pollution can damage their health，but many do not know that indoor air pollution can also have significant health effects.Environmental Protection Agency studies indicate that indoor levels of pollutants may be 3～5 times，and occasionally more than 100 times，higher than outdoor levels.These levels of indoor air pollutants may be of particular concern because most people spend about 90% of their time indoors.
There are many sources of indoor air pollution in any home.These include sources such as oil，gas，coal，wood，and tobacco products，building materials，wet or damp carpet，and furniture made of certain pressed wood products，products for household cleaning and maintenance，personal care，or hobbies，central heating and cooling systems.
Immediate effects may show up after a single exposure (暴露) or repeated exposures.These include irritation of the eyes，nose，and throat，headaches，dizziness.Such immediate effects are usually shortterm and treatable.Sometimes the treatment is simply removing the person’s exposure to the source of the pollution，if it can be identified.
The likelihood of immediate reactions to indoor air pollutants depends on several factors.Age and preexisting medical conditions are two important influences.In other cases，whether a person reacts to a pollutant depends on individual sensitivity，which varies tremendously from person to person.Some people can become sensitized to biological pollutants after repeated exposures，and it appears that some people can become sensitized to chemical pollutants as well.
Certain immediate effects are similar to those from colds or other viral (病毒性的) diseases，so it is often difficult to determine if the symptoms are a result of exposure to indoor air pollution.While pollutants commonly found in indoor air are responsible for many harmful effects，there is considerable uncertainty about what concentrations or periods of exposure are necessary to produce specific health problems.People also react very differently to exposure to indoor air pollutants.Therefore，further research is needed to better understand the effects of indoor air pollution and to find efficient ways to protect our health.According to the first paragraph，which of the following is NOT true?
| A．People often fail to notice indoor air pollution. |
| B．Indoor air pollution sometimes is more dangerous than outdoor air pollution. |
| C．Outdoor air pollution may not be so serious as indoor air pollution. |
| D．It is obvious that people have been paying more attention to indoor air pollution. |
According to the author，which may NOT be the source of indoor air pollution?
| A．Building materials. | B．Wet carpet. |
| C．Cooling system. | D．Refrigerators. |
What does the underlined word “irritation” in the third paragraph probably mean?
| A．Bad intention. | B．Much sensitivity. |
| C．Injury. | D．Carelessness. |
Which of the following might be the best title for the passage?
| A．Reactions of Pollution | B．Danger from Home |
| C．Pollution Resources | D．Different Pollutions |
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