题目

从Ⅱ栏中找出Ⅰ栏中各自的小伙伴。                Ⅰ                                                     Ⅱ(   ) 1. Is that a bus.                          A. How do you do ? (   ) 2. Who’s that?                           B. Yes, he is.(   ) 3. What are these in English?      C. No, it isn’t. It’s a car.(   ) 4. How do you do ?                   D. That’s Sam.(   ) 5. Is Jim in Class 2, Grade 7?     E. They are cars下列反应属于氧化还原反应的是（       ） A．H2SO4＋2NaOH  Na2SO4＋2H2O B．2NaHCO3  Na2CO3 + CO2↑ + H2O C．NH3 + HCl  NH4Cl   D．CuO ＋ H2 Cu ＋ H2O