将6.18×10﹣3化为小数是( )
A:0.000618
B:0.00618
C:0.0618
D:0.618
________ are middle school students.
Lisa is____ ____ ____any other student in my class.
一个袋中装有红黄白球各3个,为确保一次从中取出的球3种颜色都有,则最少要取出( )个球.