单项选择题

The main topic of the passage is ______.

A．industries in the past and at present
B．changes in the development of industries
C．the protection of industrial workers and customers
D．the freedom of industries

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单项选择题

According to Paragraph 1, compared with today, industries in the past______.

A．were controlled less strictly
B．were worse off
C．affected more people's health
D．put out more unhealthy products

单项选择题

It can be inferred from the passage that ______.

A．American women were not treated as equals of their male counterparts in the 18th century
B．there were many female scholars in America in the 18th century
C．Abigail Adams lived to see her dreams come true
D．Abigail Adams was not satisfied with her husband because of his tyranny