【简答题】你会用简便方法计算下列各题吗?试一试! 4×99+4=( )×4=( ) 99×6+6=( )×( )=( ) 99×8+8=( )×( )=( )
【简答题】词汇 1.I usually r my bike to go shopping. 2.Is there a s station near here. 3.It is about 100 k from this city to South Korea. 4. How f is it from your home to the station? 5.It’s five m walk from here...
【单选题】瞳孔的大小是可以改变的,扩瞳状态可由什么引起:( )
【判断题】正极活性物质具有较高的电极电位,在电池工作时进行氧化反应 或阳极过程。