A:整理器材,分析数据,得出结论
B:对换L1和L2的位置,再测出一组电流值
C:改变电源电压,再测出几组电流值
D:换用不同规格的小灯泡,再测出几组电流值
— How many books did you borrow in the library?
— Three. I borrowed one yesterday and ________ two this morning.
“扎实推进资源节约和环境保护”是“十二五”时期的主要目标和任务之一,下列做法与这一目标不相符 的是( )
—He always ____ his ____ to school.