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[单项选择]Task 2
Many of the world’s population 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 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 2000 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 2005. If the population continues to grow at the same rate, there will be 25 billion people 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 ah-nost used tip. Now many people believe that man’s greatest problem is how to control the growth of the populatio
A. 7 billion
B. 250 million
C. 25 billion
D. 3.5 billion
[简答题]Many of the world’s languages are disappearing as modern communications, migration (人口迁移) and population growth end the isolation of ethnic groups. At least half the world’s 6,000 languages will likely die out in the next century and only 5 percent of languages are safe, meaning they are spoken by at least 1 million people and receive state backing, experts say.
[单项选择]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 in human population continues at the present rate, there may be much greater harm. Some scientists speak of the increase in numbers of people as "population pollution".
About 2,000 years ago, the world population was probably 250 million. It reached a billion in 1850. By 1930, the population was two billion. It was three and a half billion in 1988. It is expected to double by the year 2000. If the population continues to grow at the same rate, there would be 25 billion people in the world a hundred years from now!
Man has been using the earth’s resources more and more rapidly over the years. Some of them are almost gone. Now many people believe that man’s greatest problem is how to control population, in time to come, if the present rate of increase continues. Already
A. fewer people moved from countryside to the cities
B. more people moved from countryside to the cities
C. industry developed less fast
D. many people moved to the cities without the development of industry
[单项选择]
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 in human population continues at the present rate, there may be much greater harm. Some scientists speak of the increase in numbers of people as "population pollution".
About 2,000 years ago, the world population was probably 250 million. It reached a billion in 1850. By 1930, the population was two billion. It was three and a half billion in 1988. It is expected to double by the year 2000. If the population continues to grow at the same rate, there would be 25 billion people in the world a hundred years from now!
Man has been using the earth’s resources more and more rapidly over the years. Some of them are almost gone. Now many people believe that man’s greatest problem is how to control population, in time to come, if the pre
A. fewer people moved from countryside to the cities
B. more people moved from countryside to the cities
C. industry developed less fast
D. many people moved to the cities without the development of industry
