The fried foods, salty snacks and meat are major food of the
Western diet, which accounts for about 30 percent of heart attack
risk (风险)  across the world.  Meanwhile, a diet rich in fruits and
vegetables, the so-called "Prudent" diet, can lower the risk of
heart attack, according to a study.
      The research, which looked at dietary habits in 52 countries,
found people who ate a Western diet had a 35 percent greater risk
of having a heart attack compared to those who ate little or no fried
foods and meat. Those who followed a "Prudent" diet had a 30
percent lower risk of heart attack compared to those who eat little
fruits and vegetables.
      The authors also looked at an "Oriental" diet, rich in tofu,
soy and other sauces (酱类), and found it did not increase or
decrease the risk of a heart attack.
     Previous studies have reached similar conclusions about the
"Prudent" and Western diet in the United States and Europe, but
did not include the Oriental pattern of eating. While some food of
the Oriental diet may protect against heart trouble, the higher
sodium (钠)  content of sauces counter (抵消) that benefit.
     "This study indicates that the same relationships that are
observed in Western countries exist in different regions of the
world," a professor of medicine at McMaster University said.
     Canadian researchers analyzed risk factors in food choices
and the risk of heart attack in about 16,000 people in 52
countries. Almost 6,000 people had heart attacks, while the rest
had no heart disease.

1. According to the passage, the _____ can lower the risk of  heart attack by 30% .     

A. Western diet                    
B. "Prudent" diet
C. "Oriental" diet               
D. not mentioned

2. The " Oriental"  diet mainly includes the following food EXCEPT _____. 

A. fried food                        
B. tofu
C. soy                                
D. sauces

3. If you want to avoid a heart attack, you should avoid  _____.  

A. vegetables and fruits
B. tofu and soy
C. high sodium
D. the "Prudent" diet

4.  The underlined word "relationships" mentioned in the last butone paragraph refers to "_____  "   

A. study and diet
B. diet and heart attack
C. Western diet and " Oriental"  diet
D. the United States and Europe

5. From the passage, we can learn that  _____. 

A. the "Prudent" diet is rich in salty snacks and meat.
B. previous studies included the "Oriental" diet
C. fruits and vegetables are good for the heart
D. the " Oriental"  diet can lower heart attack risk