如图所示的电路中，当开关闭合后电流表示数为I，则L₁中的电流=____；L₂中的电流=____。

用所给词的适当形式填空 
All of us can get lots of presents on____ Day. (child)
Our school is big and beautiful. What about____?(they)
Be quiet! The mother with her twin babies____.(sleep)
You just need to practise____English more. (speak)
A good breakfast helps Amy____fit and health. (keep)
____ there a pair of trousers on the bed? I can't find mine. (be)
I don't know what____(choose) in the clothes shop.
There are some boys____ basketball on the playground. (play)
It takes me 2 hours ____ my homework every day. (do)
It's six o'clock now. Millie and Sandy____(not run) in the playground .

下列运算中，正确的是（　　）

如图，在平行四边形ABCD中，对角线AC,BD的长度分别为10和6，则AB长度的最大整数值是（      ）

春秋战国时期发生社会大变革的根本原因是 （   ）