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三道gaozhong英语单选题求答案+解释

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三道gaozhong英语单选题求答案+解释
Not only Tom and John but also third sister,Mary,____great interest in the piano lessons.
A.take B.takes C.have taken D.had taken
They have already had some everyday words____to the new edition of the dictionary.
A.adding B.add C.added D.to add
Generally speaking,____good education in regarded as____ticket to success.
A.a,a B/,/ C.the,the D.the,a

三道gaozhong英语单选题求答案+解释
B not only...but also句型的动词,考虑就近原则,离着最近的主语mary是单数,所以只能用takes,had taken 是过去完成时,在整句中时态不合适.所以不能选had taken.
C words 是被加到句子里的,所以要用被动语态added.
A a good education 指的是一般意义上的 良好的教育,没有特指,所以用a; a ticket to success 指的是通向成功的一条途径,是途径之一,而不是特指哪一条.所以用a.