单项选择题

Questions 4 to 6 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation. It is said that there will be______soon.

A．Africa once again
B．a rational use of water
C．limited allotments of water
D．a national concern about water

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单项选择题

单项选择题

Questions 4 to 6 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now, listen to the conversation. It is said that there will be______soon. 您的浏览器不支持 audio 元素。