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【单选题】In a purely biological sense, fear begins with the body’’s system for reacting to things that can harm us—the so-called fight-or-flight response. "An animal that can’’t detect danger can’’t stay alive...
A.
reactions of humans and animals to dangerous situations are often unpredictable
B.
memories of significant events enable people to control fear and distress
C.
people’’s unpleasant memories are derived from their feelings of fear
D.
the amygdala plays a vital part in human and animal responses to potential danger
【单选题】鼻黏膜嗅细胞（）
A.
呈高柱状，游离面的嗅毛属于微绒毛
B.
呈梭形，游离面的嗅毛属于微绒毛
C.
呈锥形，游离面的嗅毛属于纤毛
D.
呈高柱状，游离面的嗅毛属于纤毛
E.
呈梭形，游离面的嗅毛属于纤毛