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A．They are privately owned.B．They are sold when they are relatively new.C．There is a l
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Einstein could not afford to pay for the advanced education he needed, because his family business had declined. Later, he and his family were forced to leave Munich to live in Milan, Italy, where they had relatives. As for him, the family did manage to send him to a technical school in Switzerland, and later to the Federal Institute of Technology in Zurich. In 1901, when Einstein was 22 years old, he began teaching, and in 1902, be went to work as a patent office examiner in Bern. Now able to pay his own expenses, he continued his schooling at the University of Zurich, where he received a doctor's degree in 1905. This was the period when he first began the research, which led to his famous theory of relativity.
Toward the end of his life, when Einstein was asked to explain his law of relativity to a group of young students, he said, "When you sit with a nice girl for two hours, you think it's only a minute. But when you sit on a hot stove for a minute, you think it's two hours. That is relativity."
What is Einstein's greatest contribution to human beings？
听力原文： Accustomed though we are to speaking of the films made before 1927 as "silent", the film has never been, in the full sense of the word, silent. From the very beginning, music was regarded as an indispensable accompaniment; when the Lumiere films were shown at the first public film exhibition in the United States in February 1896, they were accompanied by piano improvisations on popular tunes. At first, the music played bore no special relationship to the films; an accompaniment of any kind was sufficient. Within a very short time, however, the incongruity of playing lively music to a solemn film became apparent, and film pianists began to take some care in matching their pieces to the mood of the film.
As movie theaters grew in number and importance, a violinist, and perhaps a cellist, would be added to the pianist in certain cases, and in the larger movie theaters small orchestras were formed. For a number of years the selection of music for each film program rested entirely in the hands of the conductor or leader of the orchestra, and very often the principal qualification for holding such a position was not skill or taste so much as the ownership of a large personal library of musical pieces. Since the conductor seldom saw the films until the night before they were to be shown, the musical arrangement was normally improvised in the greatest hurry.
To help meet this difficulty, film distributing companies started the practice of publishing suggestions for musical accompaniments. In 1909, for example, the Edison Company began issuing with their films such indications of mood as "pleasant", "sad", "lively". The suggestions became more explicit, and so emerged the musical cue sheet containing indications of mood, the titles of suitable pieces of music, and precise directions to show where one piece led into the next.
Certain films had music especially composed for them. The most famous of these early special scores was that composed and arranged for D. W Griffith's film Birth of a Nation, which was released in 1915.
When were the Lumiere films shown at the first public film exhibition in America？
听力原文：Moving into the new apartment has taken a great deal out of him.
What does the speaker mean？
听力原文： You ask me to explain to you how I find out what is happening？ Well, news can be something the authorities want you to know, or something they would rather keep secret. An announcement of a government success, a denial of a failure, or, a secret scandal that nobody really wants you to talk about. If the authorities want to tell the world some good news, they issue statements, communiques, and call press conferences. Or, politicians make speeches. Local newspapers, radio and television help to alert foreign correspondents to what is going on. And by making contacts with local officials, journalists can ask for more information or explanations to help them write their stories. Unless the correspondent is an eyewitness, it's rare to trust any single source. Officials have a policy to defend, opposition politicians want to attack it. Rumor and gossip can also confuse the situation. So, you have to check information as much as possible, using common sense and experience as final checks to help establish just what's likely to be the truth, or close to it.
What is this talk mainly about？
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