单项选择题

Questions 14 to 16 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage.
Which studying material is more challenging

A．The study guide.
B．The course reader.
C．The textbook by Osborne.
D．Readings by Bender.

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单项选择题

单项选择题

Questions 14 to 16 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now, listen to the passage. Which studying material is more challenging 您的浏览器不支持 audio 元素。