题目内容
One major purpose of this study was to demonstrate whether or not the newer social research techniques could help in broadening and deepening knowledge concerning juvenile delinquency(少年犯罪). Construction of the design was guided by this goal of exploring new methods in the analysis of juvenile delinquency. However, research technique developed in one content area can not be mechanically transferred to another. A new application of them requires substantial changes and it is these innovative modifications which this study offers as its contribution.
Juvenile delinquency has been the subject of many previous studies using a variety of research techniques. This study makes an additional contribution by using a design specially planned to permit a comparison of several approaches.
The drawing up of the study design profited greatly from an extensive survey of previous re searches on crime, undertaken during the earliest stage of the project. It was found that most studies could be classified as belonging to one or more of three broadly conceived types: social background study, family background study and personal motivation study.
Each type has its characteristic design and mode of interpretation and each has produced information of considerable importance. Yet not attempt was made in any of the studies to integrate one or more of these three design types. It became apparent that one of the major contributions a pilot study could make to both method and substantive findings would be to bring all three study types together in one design for the purpose of correlating(使相互关联) their findings and evaluating their relative importance in producing data of use to the practitioner.
In the first paragraph, the author draws an analogy between ______.
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This passage mainly deals with the history of passports.
In the United Sates, the passport is valid for 10 years for people under 18.
A．The horse won over the train.B．The horse lost the race.C．The engine broke down and t
听力原文： In the early days of the railroads, horses pulled the trains. The trains had no power of their own. Richard Trevithik of England invented a steam-powered engine in 1804. Soon people were building railroads and steam engines all over the world. Because the steam engines did the work that animals used to do, people called them "iron horses".
Peter Cooper was a rich American businessman. He owned a lot of land near the Baltimore and Ohio Railroad. He wanted the railroad to be successful. He built his own steam engine to drive along the railroad.
Most people traveled in coaches drawn by horses. A coach line challenged Peter Cooper to a race.
The day of the race came. At first the horse was winning the race. Peter Cooper's engine needed time to build up steam. He worked hard to make the train go faster. Soon he was catching up with the horse, he was going to win the race! Suddenly one of the parts of the engine broke. The train stopped. The horse rushed ahead. Peter Cooper lost the race.
Of course, that was not the end of the story. By 1870, railroad extended all across the United States. The "iron horse" had become an important part of American life,
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