It’s reported there are ____________ students and five ____________ teachers in that big school.

A. six thousand of; hundred     B. thousands of; hundred   

C. six thousand; hundred of     D. thousands of; hundred of

　　This year 1 twenty-three hundred teenagers from all over the world will spend about ten months in U. S. 2 . They will attend U. S, schools, meet U. S. teenagers, and form 3 of the real America. At the same time, about thirteen hundred American teenagers will go to other countries to learn new 4 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. 5 , 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. School was completely different from what he had expected－much 6 . Students rose respectfully when the teacher entered the room. They took fourteen subjects 7 the six that are usual in the United States：There were almost no 8 activities.

　　Family life, too, was different. The father's word was 9 , and all activities were around the family rather than the individual. Fred found the food too simple at first. 10 , he missed having a car.

　　“Back home, you 11 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 12 boy, was also forming his idea. “I suppose I should criticize American school,” he says. “It is far too easy by our 13 . But I have to say that I like it very much. In Germany we do nothing but 14 . Here we take part in many outside activities. I think that maybe your schools are better in training for 15. There ought to be some middle ground between the two.”

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