This year some twenty-three hundred teenagers(young people aged from 13―19)from all over the world will spend about ten months in U. S. homes. They will attend U.S. schools, meet U.S. teenagers, and form impressions of the real America. At the same time, about thirteen hundred American teenagers will go to other countries to learn new languages and gain a new understanding of the rest of the world.

Here is a two-way student exchange in action. Fred nineteen, spent last year in Germany with George’s family. In turn, George’s son Mike spent a year in Fred’s home in America.

Fred, a lively young man, knew little German when he arrived, but after two months’ study, the language began to come to him. The school was completely different from what he had expected-much harder. Students rose respectfully when the teacher entered the room. They took fourteen subjects instead of the six that are usual in the United States. There were almost no outside activities.

   Family life, too, was different. The father’s word was law, and all activities were around the family rather than the individual. Fred found the food too simple at first. Also, he missed having a car.

   “Back home, you pick up some friends in a car and go out and have a good time. In Germany, you walk, but you soon learn to like it.”

  At the same time, in America, Mike, a friendly German boy, was also forming his idea.“I suppose I should criticize American schools,”he says.“It is far too easy by our level. But I have to say that I like it very much. In Germany we do nothing but study. Here we take part in many outside activities. I think that maybe your schools are better in training for citizens. There ought to be some middle ground between the two.”

 

54.This year      teenagers will take part in the exchange programme between America and other countries.

   A.twenty three hundred                           B.thirteen hundred

   C.over three thousand                             D.less than two thousand

55.The whole exchange programme is mainly to       .

   A.help teenagers in other countries know the real America

   B.send students in America to travel in Germany

   C.let students learn something about other countries

   D.have teenagers learn new languages

56.What is particular in America schools is that       .

   A.there is some middle ground between the two teaching buildings.

   B.there are a lot of outside activities

   C.students usually take fourteen subjects in all

   D.students go outside to enjoy themselves in a car

57.After experiencing the American school life, Mike thought       .

   A.a better education should include something good from both American and Germany

   B.German schools trained students to be better citizens

   C.American schools were not as good as German schools

   D.the easy life in the American school was more helpful to students

    Worms,antis,and flowers live in soil.Fish,crabs,and seaweeds live in oceans.Birds,insects,and moss live in trees.soil,oceans,and trees are habitats一places where animals and plants live .Besides offering food and shelter, habitats allow for growth and reproduction.

    Humans, however,have destroyed many habitats.We change forests into parking lots. We turn grasslands into neighborhoods.We turn beach land into resorts.We turn 0ceans into chemical dumps.Some plants and animals adapt and survive.Others,however die.The changes are too much,too fast.Sometimes the death rate becomes greater than the birth rate.then the extinction occurs.An example of this happened on Florida's east coast,the habitat of the dusky seaside sparrow.This habitat changed suddenly as land was developed. And the sparrows were not able to adapt. More sparrows died than were born. In 1987 the  dusky seaside sparrow became extinct .None exist in the world today.

    Fortunately,conservation efforts are underway.Many states have set aside land for nature preserves. Here,plants and animals live in their natural habitats.Some states have created man-made habitats .Artificial reefs,for example,have been put in ocean waters. The artificial reefs are habitats for hundreds of fish and other marine life.In 1970 the federal government passed a law to protect habitats.'Ibis~that the efforts of development must be studied.A highway,dam,or power plant may not be built if plants and animals,endangered.We were too late to save the dusky sparrow.Hopefully,however,these new efforts will save other plants and animals.

63.This passage is concerned with_.

    A. federal laws

    B. the dusky seaside sparrow

    C. habitat protection

    D. artificial reefs

64.The worst that can happen when habitats are destroyed is that plants and animals

    A. live in their natural habitats

    B. become extinct

    C. adapt and survive

    D. move to new habitats

65.The author’s feeling about conservation efforts is one of_.

    A. surprise

    B. disrespect

    C. hope

    D. enthusiasm

66. The author explains the effects of habitat destruction by presenting a_.

    A. real-life example

    B. personal narrative

    C. scientific study

    D. made-un story

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