IV. Listen and choose.(听单词，圈出你听到的单词的首字母)

1. cat 2. dog 3. blue 4. crayon 5. dock 6. bag 7. apple 8. book

V. Listen and choose.(根据你听到的内容，为下面的图片选择正确的单词，在其序号上打对号)

1. I have a red pen.

2.This is a black pencil box.

3. I have a white crayon.

4. This is a green ruler.

5. I have a blue book.

6. This is a brown eraser.