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1、People were puzzled ____ they read the book.

      A. the first time      B. at the first time          C. for the first time        D. at first

1、A

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科目：高中英語 來源： 題型：

People were puzzled ____ they read the book.

      A. the first time      B. at the first time          C. for the first time        D. at first

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科目：高中英語 來源：山東省濟(jì)寧市重點(diǎn)中學(xué)2011－2012學(xué)年高二上學(xué)期期中考試英語試題 題型：016

People were puzzled ________ they read the book．

[　　]
A．

the first time

B．

at the first time

C．

for the first time

D．

at first

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