阅读下面的短文，并根据短文后的要求做题。(请注意问题后的字数要求)

　　Recently, two professors of the University of Nebraska made a weekly television programme in which they discussed worthwhile books．Even primary school graduates watched, listened and learned．Therefore, it is not true that ETV has not been taught in the United States．I doubt the statement that “programmes which inform and enrich the mind in a general manner are wasted in schools”．There is a need to teach directly by television if we take teaching in the broad sense of the term．

　　Direct teaching by television has been explained as a series of television lessons directly related to a particular classroom textbook to satisfy the needs of pupils and teachers in a particular subject．Each lesson will be prepared by a teacher who also knows television production techniques and uses the modern technology in a television studio to put across his subject．

　　Will such TV lessons do without the services of a classroom teacher? In fact, without the classroom teacher to review the material and answer questions that such TV lessons would to be of very great value．

　　The children who watch ETV do so with different results－from very good to fair．Possibly, the programmes are too similar or too serious．Generally, they are not too long．Very likely, the children who benefit least are the slow learners．However, it is believed that there is a bright future for ETV inside and outside the classroom．The time may come when bigger and clearer screens will be used in the classroom, bigger and better programs will be exchanged between countries and more foreign experts will be brought in, listened to and followed by newcomers in the ETV field．

1．What’s the best title of the passage?(Please answer within 10 words．)

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2．Which sentence in the passage can be replaced by the following one?

It is probable that ETV isn’t useful to the slow students．

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3．Please fill in the blank with proper words or phrases to complete the sentence．(Please answer within 10 words．)

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4．What advantages does ETV have?(Please answer within 30 words．)

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5．Translate the underlined sentence into Chinese．

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