在单缝衍射实验中，中央亮条纹的最宽最亮．假设现在只让一个光子通过单缝，下列说法正确的是(      )

8÷2=____

根据短文内容, 选择正确答案。

    Hi, I am Andy. I am in Class 3, Grade 7. Welcome to our classroom. Isn't it big and clean?

   We all have lockers (柜) in the classroom. The red lockers are girls'. And boys' lockers are yellow. Do you like the colours? I have a locker too. This one is mine (我的). I put many things in it. There are some comic books, a football, and a pair of shoes in it. Jack's locker is beside（在……旁边） mine. There are socks and some paper in it. That one is Tom's. There are many CDs and books in it. His glasses are in the locker too.

    What is in Mary's locker? There is a yellow bag in it. What's in the bag?  We don't know. I guess there are lots of snacks(零食) in it.