Many of the world’s pollution problems have been caused by the crowding of large groups of people into the cities. Supply for the needs of the people leads to further pollution by industry. If the rapid increase of world population in countries continues at the present rate, there may be much greater harm to human beings. Some scientists speak of the increase in numbers of people as “population pollution.”

About 2,000 years ago, the world population was probably about 250 million. It reached a billion in 1850. By 1930 the population was two billion. It is now three and a half billion. It is expected to double by the year 2,000. If the population continues to grow at the same rate, there will be 25 billion in the world a hundred years from now.

Man has been using the earth’s resources more and more rapidly over the past years. Some of them are almost used up. Now many people believe that man’s greatest problem is how to control the growth of the population. The material supplies in the world will be far from enough to support the human population, in time to come, if the present rate of increase continues. Already there is overcrowding in many cities and starvation in some countries. Should man’s population keep on growing so rapidly as before? Many people believe that human survival in the future depends on the answer to this question.

59. The rapid increase in population is considered to be __________.

A. the increase of resources          B. population pollution

C. the development of mankind       D. the present rate

60. The world population will be _________ by the year 2,000.

A. 7 billion                  B. 250 million       C. 25 billion      D. 3.5 billion

61. If the present rate of increase continue, ________________.

A. the world is going to end

B. the earth won’t be able to support the growing population in the future

C. pollution has nothing to do with the rapidly increasing population

D. there would be four billion in the world a hundred years from now

62. Which of the following is WRONG according to the passage?

A. In 1850 the world population reached a billion.

B. Man must fight a battle against population pollution.

C. The world’s population is increasing with years.

D. All of the earth’s resources are gone now.

America is growing older. Fifty years ago, only 4 out of every 100 people in the United States were 65 or older. Today, 10 out of every 100 Americans are over 65. The aging of the population will affect （影响） American society in many ways — education, medicine, and business. Quietly, the graying of America has made us a very different society— one in which people have a quite different idea of what kind of behavior（行为）is suitable （合适）at various ages. A person's age no longer tells you anything about his/her social position, marriage or health. There's no longer a particular year in which one goes to school or goes to work or gets married or starts a family. The social clock that kept us on time and told us when to go to school ,get a job, or stop working isn't as strong as it used to be. It doesn't surprise us to hear of a 29-year-old university president or a 35-year-old grandmother, or a 70-year-old man who has become a father for the firs time. Public ideas are changing. Many people say, 'I am much younger than my mother - or my father - was at my age.' No one says ‘Act your age’ anymore. We've stopped looking with surprise at older people who act in youthful ways.

1.It can be learnt from the text that the aging of the population in America_________  .

A.has made people feel younger

B.has changed people's social position

C. has changed people's understanding of age

D. has slowed down the country's social development

2.The underlined word ‘one’ refers to_________.

A. a society        B. America                C. a place                 D. population

3.‘Act your age’ means people should_________.

A.be active when they are old

B.do the right thing at the right age

C. show respect for their parents young or old

D. take more physical exercise suitable to their age

4.If a 25-year-old man becomes general manager of a big firm, the writer of the text would most probably consider it ______.

A.normal            B.wonderful              C.unbelievable                   D.unreasonable

　America is growing older. Fifty - eight years ago, only 4 out of every 100 people in the United States were 65 or older. To day, 10 out of every 100 Americans are over 65. The aging of the population will affect（影响）American society in many ways—education, medicine, and business. Quietly, the graying of America has made us a very different society—one in which people have a quite different idea of what kind of behavior（行为） is suitable（合适）at various , ages.

　　A person s age no longer tells you anything about his/her social position, marriage or health. There’s no longer a particular year in which one goes to school or goes to work or gets married or starts a family. The social clock that kept us on time and told us when to go to school, get a job, or stop working isn’t as strong as it used to be. It doesn’t surprise us to hear of a 29 - year - old university president or a 35 - year -old grandmother, or a 70 year - old man who has become a father for the first time. Public ideas are changing.

　　Many people say, “I am much younger than my mother— or my father— was at my age. ”No one says“Act your age” any more. We’ve stopped looking with surprise at older people who act in youthful ways.

It can be learnt from the text that the aging of the population in America ________ .

　　A. has made people feel younger

　　B. has changed people’s social position

　　C. has changed people’s understanding of age

　　D. has slowed down the country’s social development

The underlined word “one” refers to ________ .

　　A. a society　　　　　　　　　　　B. America

　　C. a place　　　　　　　　　　　　D. population

“Act your age” means people should ________ .

　　A. be active when they are old

　　B. do the right thing at the right age

　　C. show respect for their parents young or old

　　D. take more physical exercise suitable to their age

If a 25 - year - old man becomes general manager of a big firm, the writer of the text would most probably consider it ________ .

　　A. normal　　　　　　　　　　　　B. wonderful

C. unbelievable　　　　　　　　　　D. unreasonable

America is growing older. Fifty - eight years ago, only 4 out of every 100 people in the United States were 10 or older. To day, 10 out of every 100 Americans are over 10. The aging of the population will affect（影响）American society in many ways—education, medicine, and business. Quietly, the graying of America has made us a very different society—one in which people have a quite different idea of what kind of behavior（行为） is suitable（合适）at various , ages.

A person s age no longer tells you anything about his/her social position, marriage or health. There’s no longer a particular year in which one goes to school or goes to work or gets married or starts a family. The social clock that kept us on time and told us when to go to school, get a job, or stop working isn’t as strong as it used to be. It doesn’t surprise us to hear of a 29 - year - old university president or a 35 - year -old grandmother, or a 15 year - old man who has become a father for the first time. Public ideas are changing.

Many people say, “I am much younger than my mother— or my father— was at my age. ”No one says“Act your age” any more. We’ve stopped looking with surprise at older people who act in youthful ways.

12．It can be learnt from the text that the aging of the population in America ________ .

A. has made people feel younger                B. has changed people’s social position

C. has changed people’s understanding of age   D. has slowed down the country’s social development

13．The underlined word “one”refers to ________ .

A. a society　　　B. America      C. a place　　　　D. population

14．” Act your age” means people should ________ .

A. be active when they are old

B. do the right thing at the right age

C. show respect for their parents young or old

D. take more physical exercise suitable to their age

15．If a 25 - year - old man becomes general manager of a big firm, the writer of the text would most probably consider it ________ .

A. normal　　　B. wonderful       C. unbelievable　　　　　D. unreasonable

Many of the world’s pollution problems have been caused by the crowding of large groups of people into the cities. Supply for the needs of the people leads to further pollution by industry. If the rapid increase of world population in countries continues at the present rate, there may be much greater harm to human beings. Some scientists speak of the increase in numbers of people as “population pollution.”

About 2,000 years ago, the world population was probably about 250 million. It reached a billion in 1850. By 1930 the population was two billion. It is now three and a half billion. It is expected to double by the year 2,000. If the population continues to grow at the same rate, there will be 25 billion in the world a hundred years from now.

Man has been using the earth’s resources more and more rapidly over the past years. Some of them are almost used up. Now many people believe that man’s greatest problem is how to control the growth of the population. The material supplies in the world will be far from enough to support the human population in time to come, if the present rate of increase continues. Already there is overcrowding in many cities and starvation in some countries. Should man’s population keep on growing so rapidly as before? Many people believe that human survival in the future depends on the answer to this question.

The rapid increase in population is considered to be __________.

A. the increase of resources   B. population pollution

C. the development of mankind    D. the present rate

If the present rate of increase continue, ________________.

A. the world is going to end

B. the earth won’t be able to support the growing population in the future

C. pollution has nothing to do with the rapidly increasing population

D. there would be four billion in the world a hundred years from now

Which of the following is Wrong according to the passage?

A. In 1850 the world population reached a billion.

B. Man must fight a battle against population pollution.

C. The world’s population is increasing with years.

D. All of the earth’s resources are gone now.