单项选择题

Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now listen to the conversation.
What is the conversation mainly about

A．The importance of paying back loans promptly.
B．A way to help people improve their economic conditions.
C．Using computers to increase business efficiency.
D．The expansion of international business.
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According to the man, what does the water purifier remove from the water
A．Minerals.
B．Chemical pollutants.
C．Salt.
D．Germs.
单项选择题
What’s the purpose of the talk
A．To interest students in a career in counseling.
B．To recruit counselors to work in the placement office.
C．To inform students of a university program.
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