阅读下面的对话完成任务。

A: Excuse me, Susan. （1）Is this your backpack?

B: No, it isn't. It's Jack's. （2）My backpack is green.

A: Is your computer game in the lost and found case?

B: No, it's Jack's. And that white eraser is Jack's, too.

A: Do you know Jack?

B: Yes, I do. （3）他是一个英国男孩。He's in Class One, Grade Seven.

A: Oh, what's his telephone number?

B: 100-2116

A: Is Miss Miller his English teacher?

B: Yes, you're right.

We saw a film last weekend．

材料一：人有人言．鸟有鸟语．不同的白冠雀的鸣声虽然基调相同．但又有各自的“方言”．如果把某个白冠雀鸟群A的幼体，移到另一白冠雀鸟群B中去．等到a长成成鸟，a的鸣声就不同于A鸟群而接近于B鸟群．但如果把白冠雀的幼体b移到黄莺鸟群中生活．它却学不会黄莺的鸣叫．

材料二：某人做了以下实验：在标本瓶内装几只蟑螂以及它们吃的食物，瓶口用白纱布封住，使瓶内透气．白天用黑纸袋套在瓶外，使瓶内成为暗室；晚上接开黑纸袋，用灯照明，使瓶内成为白天，经过一星期左右，蟑螂调整了自己的节律，在人工的“黑夜”活动了．