Question

【題目】He was in such a hurry that he went up the stairs --- three at time.

A.aB.anC.theD./

Answer 1

【答案】A

【解析】

句意：他很著急，所以一次走三個(gè)臺(tái)階。

考查固定搭配。at a time意為“一次，每次”固定搭配；at the time意為“那時(shí)候，在那時(shí)”，固定搭配。an用于以元音開頭的詞前，而time以輔音開頭，所以排除B項(xiàng)。D項(xiàng)是錯(cuò)誤項(xiàng)，正確搭配是at times，意為“有時(shí)，間或”。綜上所述，故選A。