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参考解析：
刷刷题刷刷变学霸
举一反三
【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】兴奋在神经-肌肉接头的传递与在神经元-神经元间突触传递的不同点是
A.
单向传递
B.
时间延搁
C.
易受环境因素的影响
D.
1:1 式的传递
E.
细胞外液中Ca2＋促进递质释放