单项选择题

Questions 17 to 20 are based on the following passage. At the end of the passage, you will he given 20 seconds to answer the questions.
Now listen to the passage.
Why does the speaker give the example of a hub of a wheel surrounded by spokes

A．To explain how the starfish reproduces.
B．To illustrate the shape of the starfish.
C．To demonstrate the defense mechanisms of starfish.
D．To show how starfish moving.

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单项选择题

What does Carl think about taking part in the Olympic Games

A．He has decided that it is time for him to leave.
B．He has lost interest in the Games.
C．He thinks he is too old for the Games.
D．He will take part in one more Olympic Games.

单项选择题

How many electorates opposed the EU constitution in French

A．About 20 percent.
B．More than 50 percent.
C．About 50 percent.
D．Less than 50 percent.

Questions 17 to 20 are based on the following passage. At the end of the passage, you will he given 20 seconds to answer the questions. Now listen to the passage. Why does the speaker give the example of a hub of a wheel surrounded by spokes 您的浏览器不支持 audio 元素。

Questions 17 to 20 are based on the following passage. At the end of the passage, you will he given 20 seconds to answer the questions.
Now listen to the passage.
Why does the speaker give the example of a hub of a wheel surrounded by spokes