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【单选题】
An increasing number of students, year by year, across China ____ hard to realize their dream of studying abroad.A.
is trying
B.
are trying
C.
will try
D.
have tried
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举一反三
【简答题】write a word means "you are self-employed and start the business with another person"
【简答题】write a word means "you buy a licence to trade under the name of franchisor and you benefit from franchisor's expertise'"
【简答题】当机体成熟到一定的程度,一个信号刺激便能激发出一个新的行为模式。这体现了习性学的哪种理论?
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