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______birdsusetheirfeathersforflight,someoftheirfeather...

練習題2.74W

問題詳情:

______ birds use their feathers for flight, some of their feathers are for other purposes.

       A. Once            B. If                           C. Although              D. Because

【回答】

【*】C

______birdsusetheirfeathersforflight,someoftheirfeather...

知識點:連詞

題型:選擇題

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