For many parents , raising a teenager is like fighting a long war ,but years go by without any clear winner . Like a border conflict between neighboring countries ,the parent-teen war is about boundaries: Where is the line between what I control and what you do?

Both sides want peace ,but neither feels it has any power to stop the conflict . In part ,this is because neither is willing to admit .any responsibility for starting it . From the parents’ point of view, the only cause of their fight is their adolescents’ complete unreasonableness. And of course .the  teens see it in exactly the same way , except oppositely . Both feel trapped

In this article. I’ll describe three no-win situations that commonly arise between teens and parents and then suggest some ways out of the trap. The first no-win situation is quarrels over         unimportant things . Examples include the color of the teen’s hair, the cleanliness of the bedroom ,the preferred style of clothing , the child’s failure to eat a good breakfast before school ,or his tendency to sleep until noon on the weekends .Second ,blaming , the goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong . Third , needing to be right ,It doesn’t matter what the topic is –politics. The taws of physics ,or the proper way to break an egg –the point of these arguments is to prove that you are right and the other person is wrong .for both wish to be considered an authority --- someone who actually knows something --- and  therefore to command respect. Unfortunately , as long as long as parents and teens continue to assume that they know more than the other ,they’ll continue to fight these battles forever and never make any real progress

55. Why does the author compare the parent—teen war to a border conflict?

A. both can continue for generations .

B. Both are about where to draw the line

C. Neither has any clear winner

D. Neither can be put to an end

56. What does the underlined part in Paragraph 2 mean?

A. The teens blame their parents for starting the conflict.

B. The teens agree with their parents on the cause of the conflict

C. The  teens accuse their parents of misleading them

D. The teens tend to have a full understanding of their parents

57.Parents and teens want to be right because they want to ________.

A. give orders to the other

B. know more than the other

C. gain respect from the other

D .get the other to behave properly

58. What will the author most probably discuss in the paragraph that follows?

A. causes  for the parent –teen conflicts

B. Examples of the parent –teen war.

C. Solutions for the parent –teen problems

D. Future of the parent-teen relationship

     For well over a thousand years，smallpox was a disease that everyone feared．The disease killed much of the native population in South America when the Spanish arrived there in the early sixteenth century．By the end of the eighteenth century，smallpox was responsible for about one in

ten deaths around the world．Those who survived the disease were left with ugly scars on their sjun．

      It had long been well known among farmers that people who worked with cows seldom caught smallpox；instead，they often caught a similar but much milder disease called cowpox (牛痘) ．A Bridsh doctor called Jenner was extremely interested in this，and so he studied cowpox He believed that，by vaccinating (给接种疫苗) people with the disease，he could protect them against the much worse disease smallpox．In 1796，he vaccinated a boy with cowpox and，two months later，with smallpox．The boy did not get smallpox．In the next two years，Jenner vaccinated several children in the same way，and none of them got the disease．

News of the success of Jenner’s work soon spread．Vaccination soon became a common method to protect people against other diseases caused by virus，such as rable (狂犬病)，and vaccines (疫苗) were sent across the world to the United States and India．

      It took nearly two centuries to achieve Jenner’s dream of getting free of smallpox from the whole world．In 1967，the world Health Organization (WHO) started a great vaccination program，and the last known case of smallpox was recorded in Somalia in 1977．The story of vaccinations does not end there，however．There are many other diseases that kill more and more people every year．Besides，many new diseases are being discovered．The challenge for medical researchers will，therefore，probably continue for several more centuries

Smallpox was so serious that        by the end of l8th century

A．its death rate was up to ten percent

      B．those who caught it were certain to die

      C．one in ten people in the world died of smallpox

      D．one in ten deaths in the world was caused by smallpox

Edward Jenner discovered that vaccination with cowpox could      

      A．make smallpox much milder

      B．stop people from getting smallpox

      C．protect people against any disease

      D．prevent people’s scars after smallpox

Which of the following statements is not true?

      A．The first experiment with cowpox was made by a British doctor

      B．After 1977 smallpox disappeared around the world according to WHO．

      C．Vaccination had existed among ordinary farmers before being discovered

      D．Vaccination can be used to protect people in the world against not only smallpox

The author of the passage thinks that      

      A．vaccinations bring many new problems

      B．vaccinations end the spread of diseases

      C．there is a long way to go to fight against diseases

      D．there is along way to go to discover new diseases

For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries —  where is the line between what I control and what you do?

Both sides want peace, but neither feels it has any power to stop the conflict. Partly, this is because neither is willing to admit any responsibility for starting it. From the parents’ point of view, the only cause of their fight is their adolescents’ complete unreasonableness. And of course, the teens see it in exactly the same way, except oppositely. Both feel trapped.

In this article, I’ll describe three no-win situations that commonly arise between teens and parents

and then suggest some ways out of the trap. The first no-win situation is quarrels over unimportant things. Examples include the color of the teen’s hair, the cleanliness of the bedroom, the preferred style of clothing, the child’s failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends. The second, blaming. The goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong. The third, needing to be right. It doesn’t matter what the topic is — politics, the taws of physics, or the proper way to break an egg — the point of these arguments is to prove that you are right and the other person is wrong for both wish to be considered an authority, and therefore to command respect. Unfortunately, as long as parents and teens continue to suppose that they know more than the other, they’ll continue to fight these battles forever and never make any real progress.

Why does the author compare the parent-teen war to a border conflict?

A. Both can continue for generations.          B. Both are about where to draw the line.

C. Neither has any clear winner.                 D. Neither can be put to an end.

What does the underlined part in Para. Two mean?

A. The teens blame their parents for starting the conflict.

B. The teens agree with their parents on the cause of the conflict.

C. The teens accuse their parents of misleading them.

D. The teens tend to have a full understanding of their parents.

Parents and teens want to be right because they want to ______.

A. give orders to the other                         B. know more than the other

C. gain respect from the other                           D. get the other to behave properly

What will the author most probably discuss in the paragraph that follows?

A. Causes for the parent-teen conflicts.       B. Examples of the parent-teen war.

C. Solutions for the parent-teen problems.   D. Future of the parent-teen relationship.

For Americans, a mosquito bite is an itchy bother. But for many in Africa, a tiny bite can be deadly. One million people die each year of malaria, a disease spread by infected mosquitoes. Most of these people live in Africa, and are under age 5.

Malaria can be prevented and treated. However, many African nations don't have the funds to fight it. Nothing but Nets (NBN) hopes to change that. The United Nations Foundation created the campaign in 2006. The aim is to prevent malaria by covering sleeping areas with nets. Hanging bed nets treated with insecticide(杀虫剂) is the simplest way to stop mosquitoes from biting at night. The chemicals last four to five years. For $10, anyone can send a net to Africa and help save a life.

So far, NBN has raised $19 million and delivered 700,000 nets to seven countries. Families are taught how to use the nets. Kids also get vaccines (疫苗)and vitamins. "Women line up for miles to get the medicine for their kids," says NBN director Elizabeth McKee Gore. "They understand the importance."

So do kids in this country. "They get so excited thinking of ways to raise money," says NBN spokesperson and basketball star Ruth Riley.

NBN's biggest fund-raiser is Katherine Commale, 7. She's been spreading the information about bed nets for the past two years. To show how they work, she and her brother made a video. "We teach that bed nets can save lives," she said.

Katherine has raised $42,000 for NBN. "She just wants those who need a net to have one," says her mom, Lynda. "It's pretty simple to her." To find out how you can help, visit nothingbutnets.net.

We know from the passage that NBN is in fact _________.

   A. a deadly disease                B. an organization

   C. a piece of equipment            D. a game

The purpose of the passage is most probably ___________.

   A. to list the sufferings of the African people

   B. to introduce new ways to avoid mosquito bites

   C. to call on people to offer their help to Africans

   D. to tell people how to buy nets in Africa

By saying “So do kids in this country” in Paragraph 4,the author means that kids in this country also ___________.

   A. know the importance of the bed nets

   B. know how to protect themselves

   C. lack nets to protect themselves

   D. suffer from malaria

What do we know about Katherine from the passage?

   A. She set up the website nothingbutnets.net.

   B. She is the youngest money-raiser for NBN.

   C. She raised money by making and selling videos.

   D. She started working for NBN at the age of 5.

For many parents, raising a teenager is like fighting a long war, but years go by without any clear winner. Like a border conflict between neighboring countries, the parent-teen war is about boundaries: Where is the line between what I control and what you do?

Both sides want peace, but neither feels it has any power to stop the conflict. In part, this is because neither is willing to admit .any responsibility for starting it . From the parents’ point of view, the only cause of their fight is their adolescents’ complete unreasonableness. And of course, the teens see it in exactly the same way , except oppositely . Both feel trapped.

In this article. I’ll describe three no-win situations that commonly arise between teens and parents and then suggest some ways out of the trap. The first no-win situation is quarrels over         unimportant things. Examples include the color of the teen’s hair, the cleanliness of the bedroom, the preferred style of clothing, the child’s failure to eat a good breakfast before school, or his tendency to sleep until noon on the weekends .Second, blaming, the goal of a blaming battle is to make the other admit that his bad attitude is the reason why everything goes wrong. Third, needing to be right, It doesn’t matter what the topic is –politics, the laws of physics, or the proper way to break an egg –the point of these arguments is to prove that you are right and the other person is wrong, for both wish to be considered an authority(权威) --- someone who actually knows something --- and therefore to win respect. Unfortunately, as long as parents and teens continue to think that they know more than the other, they’ll continue to fight these battles forever and never make any real progress.

Why does the author compare the parent—teen war to a border conflict?

A. both can continue for generations.    B. Both are about where to draw the line

C. Neither has any clear winner        D. Neither can be put to an end

What does the underlined part in Paragraph 2 mean?

A. The teens blame their parents for starting the conflict.

B. The teens agree with their parents on the cause of the conflict

C. The teens accuse their parents of misleading them

D. The teens tend to have a full understanding of their parents

Parents and teens want to be right because they want to ________.

A. give orders to the other           B. know more than the other

C. gain respect from the other        D .get the other to behave properly