题目

-_____ is the girl in red?- I’m not sure. But she looks like a teacher.A. How old     B. What      C. Who       D. Where 答案：B张大伯从报社以每份0.4元的价格购进了a份报纸，以每份0.5元的价格售出了b份报纸，剩余的以每份0.2元的价格退回报社，则张大伯卖报收入元．