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参考答案：
（1) future
(2) trained
(3) admire
(4) schedule
(5) considerate
(6) waste
(7) visible
(8) necessarily
(9) something that is simply there around them, not something they can use
(10) the fast food industry can be seen as a clear example of American cultural product
(11) spread around the world, they have been viewed as symbols of American society and culture
