单项选择题

Question 30 is based on the following news. At the end of the news item, you will be given 5 seconds to answer the question.

A．Ports decrease.
B．Fishermen arrest.
C．The rising fuel prices.
D．Environmental pollution.

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单项选择题

Question 30 is based on the following news. At the end of the news item, you will be given 5 seconds to answer the question. 您的浏览器不支持 audio 元素。