一、单项选择题（每题1.5分，共30分）
1. ----Hello, Jim!
---- __________
A Hello, Gina! B. What’s your name? C. Thank you. D. I am Bob.
2. A:Are these baseballs?
B:___________.
A.Yes,they're B.Yes,they are
C.Yes,these are D.Yes,they aren't
3. What’s this?
A. This is M B. It’s an M C. It’s M D. That’s M
