单项选择题

Questions 22 and 23 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
Now, listen to the news.
What is the news mainly about

A．An investigation about Iran.
B．An investigation about the U. S.
C．Iran’s national safety.
D．National defense of the U. S.

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单项选择题

单项选择题

Questions 22 and 23 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions. Now, listen to the news. What is the news mainly about 您的浏览器不支持 audio 元素。