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. The passage tells us that cats ______.

A．sleep longer than humans
B．have similar sleeping habits as humans
C．have no regular sleep
D．take naps besides their regular sleep

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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. The passage tells us that cats ______. 您的浏览器不支持 audio 元素。