单项选择题

Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions. Now listen to the passage. What is the talk mainly about

A．Differences between the planets in the solar system.
B．Methods of determining the composition of Earth and the Moon.
C．Why Earth has an iron core.
D．The origin of the Moon.
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单项选择题
What prevents the man from taking the poets of the 1960s class
A．It’s only open to poetry majors.
B．It requires another class first.
C．It’s already full.
D．It’s only offered in the morning.
单项选择题
What’s the main feature of the new method of paying for meals
A．All students pay the same amount per year.
B．Students choose how many meals a week they will pay for.
C．Students get money back for meals they don’t eat.
D．Some students get free meals.
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