镜海的倒影独霸九寨沟,海水一平如镜,蓝天、青山、绿树被映放在海底,如图所示,你会发现“倒影”部分比景物本身暗一些,这是由于() A . 入射光线有一部分折射进入水中 B . 眼睛有一种错觉 C . 冲洗照片质量有问题 D . 光线一部分被反射 答案:AD) 听录音,选出正确的应答。(听两遍)( ) 1. A. I'm hungry,Mum. B. Thanks. C. I'm very happy.( ) 2. A. No,I'm not. B. Yes,please. C. I'm not hungry.( ) 3. A. It's very nice. B It's new. C. It's Sam's.( ) 4. A. Goodbye,dear. B. All right. C. Good night,dear.( ) 5. A. Here you are. B. Thank you. C. I'm thirsty.