单项选择题

We can infer from this passage that ______.

A．offensive breath can't easily be cured
B．elderly people are less offended by bad breath
C．heavy drinkers are less affected by bad breath
D．offensive breath is less affected by alcohol

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单项选择题

The phrase emanate from in Paragraph 1 most probably means ______ .

A．thrive on
B．account for
C．originate from
D．descend from

单项选择题

According to this passage, various types of packaging come into existence to ______.

A．meet the needs of consumers
B．suit all kinds of products
C．enhance the market position of products
D．introduce new products