单项选择题

Questions 17—20 are based on the following passage about a phrase book which talks in different languages. You now have 20 seconds to read Questions 17—20. According to the speaker, what kind of problems do phrase books have

A．They are actually useless.
B．They have a practical problem.
C．They should be disigned in more phrases.
D．They don’t provide enough useful phrases.

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单项选择题

单项选择题

Questions 17—20 are based on the following passage about a phrase book which talks in different languages. You now have 20 seconds to read Questions 17—20. According to the speaker, what kind of problems do phrase books have 您的浏览器不支持 audio 元素。