赞题库-背景图
单项选择题

In this section, you will hear five short conversations. Each conversation will be read only once. At the end of each conversation, there will be a twenty-second pause. During the pause, read the question and the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on the answer sheet with a single line through the center.
How much will the man pay for two general tickets and two student tickets

A. 10.
B. 20.
C. 30.
D. 40.