单项选择题

Questions 7 to 8 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each of the two questions.
Now listen to the news.
The research was done by scientists at ______.

A．New York University
B．Columbia University in New York
C．Washington University
D．Harvard University

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单项选择题

单项选择题

Questions 7 to 8 are based on the following news. At the end of the news item, you will be given 10 seconds to answer each of the two questions. Now listen to the news. The research was done by scientists at ______. 您的浏览器不支持 audio 元素。