【简答题】He didn’t have any money for a bike.(改为肯定句) He _________ __________ money for a bike.
【简答题】室内给排水施工图中,管道类别的代号“X”表示()。 A通气管 B污水管 C消防管 D雨水管
【判断题】碘量法中,淀粉指示剂一般是在近终点时加入,否则会影响滴定终点的到达
【单选题】Last night Dad and Mum didn't come back home _____ I finished my homework. [ ]