One morning a fox sees a cock. He thinks, “This is my breakfast.”

He comes up to the cock and says, “I know you can sing very well. Can you sing for me?”  The cock is glad. He closes his eyes and begins to sing. The fox sees that and catches him in his mouth and carries him away.

    The people in the field(田) see the fox. They cry, “Look, look! The fox is carrying the cock away.” The cock says to the fox, “Mr. Fox, do you understand? The people say you are carrying their cock away. Tell them it is yours. Not theirs.”

    The fox opens his mouth and says, “The cock is mine, not yours.” Just then the cock runs away from the fox and flies into the tree.

回答下面5个问题, 每题答案不超过5个词。

格里菲思用肺炎双球菌在小鼠身上进行了著名的转化实验，关于此实验的结论不正确的是（   ）

《梦溪笔谈》是中国科学技术史上的重要文献，书中对彩虹作了如下描述：“虹乃雨中日影也，日照雨则有之”．如图是彩虹成因的简化示意图，设水滴是球形的，图中的圆代表水滴过球心的截面，入射光线在过此截面的平面内，a、b是两种不同频率的单色光．下列说法正确的是（   ）