_the age of fifteen,she had written scores of articles for a newspaper.中填at还是by,

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___the age of fifteen,she had written scores of articles for a newspaper.__中填at还是by,
___the age of fifteen,she had written scores of articles for a newspaper.__中填at还是by,

___the age of fifteen,she had written scores of articles for a newspaper.__中填at还是by,
by,因为后面用的是完成时,用at则构成过去的时间状语,我i应该用一般过去时

at 在几岁的时候，用at

at the age of fifteen,she had written scores of articles for a newspaper.
十五岁时，她为报纸写了几十篇文章。
at
[英][ət][美][æt,ət]
prep.（表示位置）在; 在（某时间或时刻）; 以，达; 向，朝;
n.阿特（老挝辅币单位，100...

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at the age of fifteen,she had written scores of articles for a newspaper.
十五岁时，她为报纸写了几十篇文章。
at
[英][ət][美][æt,ət]
prep.（表示位置）在; 在（某时间或时刻）; 以，达; 向，朝;
n.阿特（老挝辅币单位，100 阿特 = 1 基普）;
by
[英][baɪ][美][baɪ]
prep.靠，通过; 被，由; 沿着; 按照;
adv.经过，过去; 在侧，在附近; 短暂拜访;

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John is ___the age of maryA.old B twice C.double D.as old as ___the age of fifteen,she had written scores of articles for a newspaper.__中填at还是by, ___the age of thirty,Peter went to Japan to look a job.A.onB.atC.fromD.by age of ___the age of fifteen,she had written scores of articles for a magazine A.At B.Before C.Since D.By at the age of at the age of at the age of from the age of .. come of age是什么意思 coming of age是什么意思 years of age是什么意思 coming-of-age age of discretion Age Of Innocence是什么 AGE OF IRON怎么样 AGE OF FRACTURE怎么样 Age of Conan