A骨头     B飞虫     C香蕉     D竹叶       E桑叶        F鱼

附加公式：

$k^2=\frac{n\left(ad-bd\right)}{\left(a+b\right)\left(c+d\right)\left(a+c\right)\left(b+d\right)}$

阅读理解

     In England, everybody knows Jamie Oliver. He has his own TV programs. In these programs, he tells people how to cook healthy food. Everyone likes Jamie's programs because his food is easy to make.
     Jamie wants people to eat healthily. In some schools in England, the food at lunch time was't healthy. One day, Jamie went to a school to make a TV program about healthy diet. He cooked the food with lots of fruit and vegetables. At first the children didn't want to eat because they didn't like fruit or vegetables. But after they tasted the food, they started to enjoy it.
     Now the food for children in schools has become much healthier.