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北师大版选修八Unit 22 A卷 Ⅰ.单项填空 1．(2017·泉州调研)—Mum, I have finished all my homework. Could I go downstairs to play with other children? —Certainly, but don't remain out ________ nine o'clock. A．through B．over C．before D．beyond 解析：考查介词。根据“不要在外面玩到超过九点钟”可知beyond“晚于，迟于”之意，符合语意。through“通过，在……中间”；over “在……的上方”；before“在……之前”，故应选D项。 答案：D 2．(2017·潍坊一模)Due to the widespread ________ of this medical technology，more diseases can be discovered and treated at an early stage. A．presentation B．application C．potential D．appreciation 解析：句意：由于这种医疗技术的广泛运用，更多的疾病能够在早期被发现并治疗。application “运用”；presentation“介绍，展示”；potential“潜力，潜在的可能性”；appreciation“欣赏，感谢”。 答案：B 3．My boss was very against my suggestion at first but she finally________ and accepted my idea. A．slowed down B．put down C．got down | 
