Simon thought his computer was broken his little brother pointed out that he had forgotten to turn i

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【题目】Simon thought his computer was broken ________ his little brother pointed out that he had forgotten to turn it on.

A. until B. because

C. while D. though

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【答案】A

【解析】本题考查连词。根据句意：Simon一直以为电脑坏了，直到他弟弟告诉他忘记开机了；not...until...意为“直到……才”。故选A。