题目

How much will the man pay for the tickets?A. 70 dollars. B. 50 dollars C. 20 dollars. 答案：【答案】B【解析】M: Excuse me. How much is the ticket for the film Alita: Battle Angel?W: The full price is 35 dollars. For students, it is 10 dollars off.M: OK. Can I have two tickets, please? Here are our student cards.此题为听力题，解析略。9．先化简，再求值：（2+3x）（-2+3x）-5x（x-1）-（2x-1）2，其中x=-$\frac{1}{3}$．