单项选择题

The phrase "this relationship"( in Line 3, Para. 5 )refers to the connection between ______and the incidence of heart disease.

A．the amount of fish eaten
B．regular fish-eating
C．the kind of fish eaten
D．people of different regions
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单项选择题
The passage is mainly about ______.
A．the high incidence of heart disease in some countries
B．the effect of fish eating on people's health
C．the changes in people's diet
D．the daily fish consumption of people in different cultures
单项选择题
According to the passage, an assertive person ______.
A．makes other people feel unfairly treated
B．puts forward his ideas at the expense of others
C．does not show respect to other people
D．speaks out what he wants to say forcefully
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