单项选择题

Questions 11 to 13 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.
How many high school students are presenting science projects in Portland this week

A．One hundred.
B．Several hundred.
C．One thousand.
D．Several thousan

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单项选择题

单项选择题

Questions 11 to 13 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. How many high school students are presenting science projects in Portland this week 您的浏览器不支持 audio 元素。