单项选择题

Questions 17-20 are based on a monologue about computer. You now have 20 seconds to read Questions 17-20. What does this passage mainly talk about

A．Computers have become part of our daily lives.
B．Computers have advantages as well as disadvantages.
C．People have different attitudes to computers.
D．More and more families will own computers.

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单项选择题

What are the speakers mainly discussing

A．Ways to determine the age of a fossil.
B．The identity of a fossil the woman found.
C．A comparison of two shellfish fossils.
D．Plans for a field trip to look for fossils.

单项选择题

What is the author's main purpose

A．To make the point that animal emotions are worth our attention.
B．To explain what reflexive behaviors are.
C．To compare human emotions with animal emotions.
D．To discuss the importance of emotions.

Questions 17-20 are based on a monologue about computer. You now have 20 seconds to read Questions 17-20. What does this passage mainly talk about 您的浏览器不支持 audio 元素。

Questions 17-20 are based on a monologue about computer. You now have 20 seconds to read Questions 17-20. What does this passage mainly talk about