题目内容
12．The roller coaster moved ________ a high speed and we were screaming and laughing________ the ride．（ ）| A． | in； through | B． | at； through | C． | in； during | D． | at； on |
分析 过山车以高速移动着，我们尖叫着，笑着穿越滑道．
解答 答案：B．过山车以高速移动着，我们尖叫着，笑着穿越滑道．at a high speed"以高速运行"，在速度前面应用介词at；又根据句意可知，过山车应是从滑道中间穿越，而through表示"从中间穿过"，应用through．故选B．
点评 本题考查介词运用．对于固定短语需要我们强化记忆，不能似是而非，对于所用介词运用必须准确．
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