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科目： 來源：不詳 題型：單選題


They discovered the cause of the fire accidentally. They discovered it _______.
A．fortunatelyB．by chanceC．a(chǎn)ll of a suddenD．on purpose

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科目： 來源：不詳 題型：單選題


He often read ____ the poor light, which made him near-sighted.
A．for B．byC．onD．under

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科目： 來源：不詳 題型：單選題


He first the trees___ half and then ____ four parts.
A．in; inB．into; intoC．in; intoD．into; in

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科目： 來源：不詳 題型：單選題


I’m feeling __________ the world, for my parents will take me to Kunming for a holiday.
A．a(chǎn)t top ofB．a(chǎn)t the top ofC．on the top ofD．on top of

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科目： 來源：不詳 題型：單選題

      ---What are you busy with ?
--- We are carrying out a research ____ the causes of cancer.
A．intoB．ontoC．toD．in

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科目： 來源：不詳 題型：單選題

   They treated her very well _______one of the family members.
A．likeB．a(chǎn)sC．a(chǎn)s ifD．seems

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科目： 來源：不詳 題型：單選題

  After he won all the money they treated him ______a king.
A．likeB．a(chǎn)sC．a(chǎn)s ifD．seemed

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科目： 來源：不詳 題型：單選題

   – Look! What are those boys doing ______ the table?
---Well, they are playing cards.
A．onB．a(chǎn)roundC．underD．beside

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科目： 來源：不詳 題型：單選題

   –Excuse me, Madame. Is this plane _____take off soon?
---Oh, yes. In five minutes.
A．a(chǎn)bout toB．starting toC．beginning toD．to

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科目： 來源：不詳 題型：單選題

   Standing on top of the mountain, we watched the sun ____ the horizon.
A．sink belowB．sinking underC．sinking belowD．sink under

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