单项选择题

What is this passage mainly concerned with（）

A．The functions of the Department of Labor in America.
B．A serious problem threatening American economy.
C．The successful attempt of regulating sweatshops in America.
D．The seriousness of the problem of sweatshops in Americ

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单项选择题

Which of the following statements about the Department of Defense is true（）

A．It will become the country's 14th largest retail apparel manufacturer.
B．It hasn't acted according to the Workplace Code of' Conduct.
C．It has demanded its contractors to sign the Workplace Code of Con- duct.
D．It has teamed up with the Department of Labor to launch a campaign.

单项选择题

The author implies that the professional soloists mentioned in the passage do which of the following（）

A．Memorize all of Handel's solo oratorios.
B．Practice with amateur choruses at every rehearsal.
C．Engage singers for choral societies.
D．Give professional support to amateur groups.