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But the reactions I've gotten, from people I know, fellow travelers, and especially, from the natives of the countries I've visited, showed me that solo traveling is strange, and even considered inconceivable or reckless by many people.

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If you despise something, just remember: You don't live there, you can leave anytime, and you'll never have to deal with this again!

感觉是对直接作用于人们感觉器官的事物的()属性的反应。

A. 个别
B. 整体
C. 外部
D. 本质

感觉的产生包括哪些主要的环节:

A. 刺激作用于感受器
B. 传入神经的活动
C. 中枢神经系统
D. 传出神经的活动

皮肤觉通常包括:

A. 触觉
B. 冷觉
C. 温觉
D. 痛觉