单项选择题

Questions 17 ～ 20 are based on a monologue by a tour guide giving some information about the BART system. You now have 20 seconds to read Questions 17 ～ 20.
What kind of people don’t need a ticket

A．A group of 4 children.
B．Children not more than 4 years old.
C．Those who ride every day.
D．Those who are free from work.

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单项选择题

单项选择题

Questions 17 ～ 20 are based on a monologue by a tour guide giving some information about the BART system. You now have 20 seconds to read Questions 17 ～ 20. What kind of people don’t need a ticket 您的浏览器不支持 audio 元素。