[单项选择]What was happening in the store that day [A] There was a display(显示,陈列)of shoes and boots for spring. [B] There was a sale of shoes and boots. [C] There was a spring sale of goods.
参考答案:B 答案解析:根据第一段第一句having its spring sale on shoes and boots的意思,是鞋子和靴子春季大甩卖,因而选[B]。sale有减价出售的意思,如在on sale,have
第29题: [单项选择]毒物经呼吸道排出的速度主要取决于() A. 水溶性 B. 肺泡膜内外气体的分压差 C. 肺泡膜内外两侧有毒气体的分压差 D. 水溶性和离子化程度 E. 肺泡内有毒气体的分压 参考答案:C 答案解析:毒物经呼吸道排出方式为被动扩散,其速度主要取决于肺泡呼吸膜内外两侧有毒气体的分压差。