Unit 1 Welcome Back To SchoolPart B一、Listen and number听录音,标序号 ( ) ( ) ( ) ( )二、Read and choose读一读,选一选 A. Hello! IMike, Im a student.B. Good morning, boys and girls. Im your teacher.C. Hi! Im a boy, Im from America.D. Hello! Im Chenjie and Im a girl.三、Read and choose (读一读,选一选)Im from America.Im sorry.Good bye.Im from America.Im sorry.Good bye.A. How are you1. B. Where are you fromC. Whats your name A. Bye2. B. Thats ok.C. HiA. See you.3. B. OKC. Good afternoon .四、Read and copy读一读,抄一抄