阅读下面的短文，请根据短文后的要求将答案答题（请注意问题后的要求）
In order to be a success in the American business world, you must get along with people. You must learn to behave yourself in such a way that you earn the affection（关爱）and respect of others. As we have already pointed out, Americans mix business and pleasure. Therefore, learning how to chat informally（非正式地）can be a help with your American business contracts. Americans like to talk about a number of different topics—sports, politics, cars, popular movies, television shows and personal interests.
Many large American cities have sports teams. If you are working with Americans in the United States, it would be a good idea to find out about the local sports teams so that you can join in the almost inevitable discussions about “What our team will do this year.” Politics can be a sensitive topic unless everyone is of the same mind politically. Limit your discussions to asking questions of your friends. Most Americans are car owners and some are even obsessive（着迷的）about the subject. You can contribute to the discussion by talking about cars you have owned or by sharing information you have had in automotive magazines. Americans watch television almost every night and attend movies regularly, so naturally ___________________________.
If you are unable to watch American television or attend American movies, reading the entertainment section of such magazines as Time and Newsweek will keep you up to date on what is popular in America.
What’s the best title of the passage? (Please answer within 10 words.)
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Why should people be careful with the topic—politics? (Please answer within 8 words.)
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Please fill in the blank in the second paragraph with proper words or phrases to complete the sentence. (Please answer within 10 words.)
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Translate the underlined sentence in the first paragraph into Chinese.
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Suppose you are doing business in America, what would you do to be a success in business world? (Please answer within 20 words.)
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