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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】薄束和楔束
A.
位于后索，是同侧后根内侧部粗纤维的直接延续
B.
位于外侧索
C.
薄束起自同侧第 5 胸节以上脊神经节细胞的中枢突
D.
楔束贯穿脊髓全长
E.
薄束起自对侧第 5 胸节以上脊神经节细胞的中枢突
【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