单项选择题

Questions 18 to 20 are based on the following passage. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now listen to the passage.
Which of the following is NOT one of the reasons for the killing of wild animals

A．Species competition for space.
B．Species competition for food.
C．Protection of domestic animals.
D．Application in decoration.

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单项选择题

单项选择题

Questions 18 to 20 are based on the following passage. At the end of the conversation, you will be given 15 seconds to answer the questions.Now listen to the passage. Which of the following is NOT one of the reasons for the killing of wild animals 您的浏览器不支持 audio 元素。