单项选择题

How did cave dwelling start in this region7

A．It is an ancient tradition.
B．The wine producers lived near their stores.
C．Local people moved into holes made when rock was cut.
D．Persecution made it necessary for people to live secretly.

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单项选择题

What aspect of patent medicine does the passage mainly discuss

A．The danger.
B．Why it was so popular.
C．Whether it was an example of quackery.
D．The disadvantages.

单项选择题

Which of the following did patent medicine and the penny press have in common, according to the passage

A．An approach to gaining attention of the public.
B．A belief in advertising.
C．The need to recover money.
D．A mass audienc