单项选择题

Questions 23 and 24 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’s the purpose of police in Rio de Janeiro launching he operation

A．To catch suspected murderers.
B．To put an end to violent strikes.
C．To stop gangs’ illegal behaviours.
D．To train officers and motorcycle police.

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单项选择题

单项选择题

Questions 23 and 24 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’s the purpose of police in Rio de Janeiro launching he operation 您的浏览器不支持 audio 元素。