单项选择题
Questions 23 to 26 are based on the conversation you have just heard.
A．The frequent train delays. B．The food sold on the trains. C．The high train ticket fares. D． The monopoly of British Railways.
A．Some iced coffees have as many calories as a hot dinner. B．Iced coffees sold by some popular chains are contaminated. C．Drinking coffee after a meal is more likely to cause obesity. D．Some brand-name coffees contain harmful substances.
A．Whether we can develop social ties on the Internet. B．Whether a deleted photo is immediately removed from the web. C．Whether our blogs can be renewed daily. D．Whether we can set up our own websites.