单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now listen w the passage.
The average number of women in each group is ______.

A．30
B．27
C．65
D．35

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单项选择题

单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen w the passage. The average number of women in each group is ______. 您的浏览器不支持 audio 元素。