单项选择题

Which of the following about the 97% population is true

A．The data 'about the 97% population is rich.
B．Historians had a set of numbers indicating the date of their birth, marriage and death.
C．The 97% population had nothing that is worth of recording.
D．The data historians had presented a vivid picture of the 97% population.

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单项选择题

What is the common problem in management

A．Infrequent contact with customers and employees.
B．Managers spend little time on study.
C．Managers do not know their employees well.
D．Managers lack of experience.

单项选择题

What is the author's attitude towards the 10-minute cup of coffee method

A．Neutral.
B．Positive.
C．Critical.
D．Doubtful.