赞题库-背景图
单项选择题

In what way does the forest strike mankind as permanent

A．The trees are in community.
B．The forest is renewed each season.
C．Man's life is short in comparison.
D．It is an essential part our lives.
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单项选择题To the manufacturers, the most important use of advertisements is that advertisements

A．tell the customers what products are in store
B．tell the customers what to buy
C．help the manufacturers sell products
D．convince the customers to buy a lot of things they don't need

单项选择题Which of the following best summarizes the main idea of the passage

A．Why manufacturers sell.
B．Why people buy.
C．Why some products are sold better than others.
D．Why there is strong competition among manufacturers.