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【单选题】
与突触小体共同构成突触结构包括（ ）①同一神经元的树突 ②其他神经元的树突 ③同一神经元的细胞体 ④其他神经元的细胞体 ⑤骨骼肌细胞 ⑥心肌细胞
A.
①③
B.
②④
C.
①③⑤④
D.
②④⑤⑥
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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
【单选题】下述有关运动神经元病的表述中不正确的是（）
A.
上、下运动神经元损害可同时并存
B.
家族性少见
C.
锥体束变性从高位脊髓向下或向上发展
D.
括约肌功能通常受影响
E.
可出现延髓麻痹