Unit 3 Part B 第三课时(Start to read-Story time)一、听录音,选出单词。( )1. A. thin B. in C. this( )2. A. at B. that C. fat( )3. A. short B. long C. tall( )4. A. tall B. all C. short( )5. A. big B. small C. long二、听录音,选出句子。( )1. A. It's small and thin. B. It's big and ...