单项选择题

Some scientists believe that there is no evidence that cholestrol in food is directly linked to_____.

A．blood disease
B．heart disease
C．infectious disease
D．mental disorder
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单项选择题
Which of the following groups of human beings would probably show the greatest amount of allelomimetic behavior
A．A group of students taking a test.
B．Tennis players competing in a tournament.
C．A patrol of soldiers scouting for the enemy.
D．Drivers waiting for a traffic light to change.
单项选择题
Which of the following places is the most likely setting for allelomimetic behavior
A．A lake.
B．A cave.
C．An underground tunnel.
D．A thick forest.
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