Katy Perry's Concert
Date
On ____
About Katy Perry
A very famous ____singer. Born on October 25th.1984
The place
In ____
Time
From ____o'clock to eleven o'clock
Ticket price
299 dollars
Telephone number
____
已知a→=(1,﹣32,52),b→=(﹣3,λ,﹣152)满足a→∥b→,则λ等于( )
My mother ______ a nurse.( )
农作物收获次数的多少,与该地区生长期的长短有关。据此判断,下列地形区农作物收获次数最多的可能是( )
小明把以下物品分成两类:①铅笔芯、铜线、盐水 ②塑料尺、橡皮擦.他分成两类后的物品分别属于( )