有时我和奶奶去买鸡蛋,看到人们买鸡蛋时有意挑选不同颜色的鸡蛋,我问了买鸡蛋的人,他们有的说这是对颜色的喜好,有的说某种颜色的鸡蛋营养价值更高、品质更好。不同颜色的鸡蛋质量不同吗?于是我选择了不同颜色的鸡蛋进行了实验研究。一、试验材料 Sometimes I and my grandmother to buy eggs, see people buy eggs when they are interested in the selection of different colors of eggs, I asked the people who buy eggs, some of them say that this is the color preferences, and some say the color of egg nutrition value Higher, better quality. Different color eggs different quality? So I chose different colors of eggs for experimental study. First, the test materials