单项选择题

Questions 9 to 12 are based on the conversation you have just heard.

A. To help him explain the information to his roommate.
B. To help him write a paper.
C. To prepare for a test.
D. To tell her if the notes are accurate.
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单项选择题
B
单项选择题
A. It is being rapidly expanded. B. It is found in one million homes. C. It is relatively new. D. It is very well established.
A. It is being rapidly expanded. B. It is found in one million homes.
C. It is relatively new. D. It is very well established.
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