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______ refers to a sociolinguistic situation two varieties of a language exist side by sid
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There are ______ Russian（s) and ______ American（s) on board.A．one, oneB．one, twoC．two, two
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One new ______ to learning a foreign language is to study the language in its cultural con
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We can learn from the first two paragraphs that______.A．high unemployment rates make it ha
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Listening, speaking, reading, and writing ______ the fundamental order in language learnin
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________ speaking no variety of language is better than or superior to others.
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以下对枚举类型名的定义中正确的是______。A.enum a={one two three};B.enum a {one=9 two=1 thre
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