单项选择题

Questions 19 to 21 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 notes are accurate.
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What are helping to spark green revolution in American workplaces
单项选择题
A．Changes in Life style have a strong influence on business.B．Baby goods make money easily.C．Business men are only interested in babies.D．Business should always be ready to meet the babies’ needs.
A．Changes in Life style have a strong influence on business.
B．Baby goods make money easily.
C．Business men are only interested in babies.
D．Business should always be ready to meet the babies’ needs.
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