单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now, listen to the passage.
According to the passage, it is not easy to get seal

A．in water.
B．on the ice.
C．in the polar region.
D．on the pinnacle.

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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 passage, you will be given 15 seconds to answer the questions. Now, listen to the passage. According to the passage, it is not easy to get seal 您的浏览器不支持 audio 元素。