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【題目】I thought she was famous,but none of my friends have ________ heard of her.

A. even B. ever

C. just D. never

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【題目】Many students believe that the choice of their courses and universities should ______ their own interest.

A. be based on B. base on

C. be basing on D. base at

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【題目】 ______ scientists have learned a lot about the universe, there is much we still don't know.

A. Once B. Since

C. Though D. Unless

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【題目】Personally,I think modern education is ______sitting at a desk and looking at the blackboard.

A. more than B. no more than

C. less than D. no less than

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【題目】The reason why he was absent from the meeting was he was delayed by the accident.

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【題目】The bus we (一直等待) was too crowded, so we decided to catch a later one.

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【題目】 _____the damage is done, it will take many years for the farmland to recover.

A. Until B. Unless

C. Once D. Although

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【題目】Do you believe scientists will ______ a cure for cancer in the near future?

A. come up B. come up with

C. come about D. bring about

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【題目】 If you miss this chance, it may be years ____ you get another one.

A. as B. before

C. since D. after

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【題目】Weather (permitr), we will go out for a walk.

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