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【单选题】
神经元之间除了经典突触联系外还存在电突触，其结构基础是
A.
缝隙连接
B.
曲张体
C.
混合性突触
D.
交互性突触
E.
串联性突触
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参考解析：
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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