单项选择题

According to the passage, people could reduce the chance of suffering heart attack by ______.

A．eating less foods with a lot of cholesterol
B．eating less of low cholesterol foods
C．eating a lot of high cholesterol foods
D．eating drugs
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单项选择题
The main topic of the passage is the ______.
A．value of allelomimetic behavior in vertebrate and invertebrate species
B．definition and distribution of allelomimetic behavior
C．relationship of allelomimetie behavior to the survival of the fittest
D．personality factors that determine when an individual animal will show allelomimetic behavior
单项选择题
Which of the following is the most clear example of allelomimetic
A．Bears hunting for carnivores.
B．Cattle fleeing from a fire.
C．Horses running at a racetrack.
D．Dogs working with police officers.
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