题目

—Which room was Oliver taken to? —It was the room ______ the managers of the workhouse were having a meeting. A. where                       B. that                         C. which                      D. / 答案：A下图是叶片气孔的示意图，下列哪种物质不能由气孔进出叶片 [     ]A．氧气 B．二氧化碳C．水蒸汽 D．无机盐