题目

听下面一段较长对话，回答以下小题。【1】Which subject is difficult for the woman?A.Math. B.History. C.Chemistry.【2】When can the woman have tutoring(家教)?A.On Tuesdays. B.On Thursdays. C.On Fridays.【3】Who is in charge of the Gifted Program?A.Mr. Jennings. B.Mr. Hobart. C.Mrs. Lee. 答案：【答案】【1】A【2】B【3】C【解析】【原文】此题为听力题，解析略。10、下列各式能用平方差公式因式分解的是（　　）A、A2+B2B、-A2-B2C、-A2+B2D、A2-BC2