单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard.

A．Because marketing groups have collected consumers’ information for years.
B．Because marketing groups can send messages around the world for free.
C．Because people keep down junk mail to a manageable level.
D．Because it is cheaper to mail packages to large groups of people.
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单项选择题
A．Pregnant women who avoided meal and fish.B．Pregnant women who like to eat meat and fish.C．Women who are more likely to have girls.D．Women who are more likely to have boys.
A．Pregnant women who avoided meal and fish.
B．Pregnant women who like to eat meat and fish.
C．Women who are more likely to have girls.
D．Women who are more likely to have boys.
单项选择题
A．They eat protein.B．They never move from one location.C．They cause erosion of rocks.D．They will never be useful to people.
A．They eat protein.
B．They never move from one location.
C．They cause erosion of rocks.
D．They will never be useful to people.
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