Question：
Using points and examples from the lecture, explain why the human hand is a valuable possession.
1、题目关键词：points and examples, explain why
2、答题要领：
(1)briefly summarize the function and uniqueness of the human hand.
(2)use examples and details to explain.
3、听力材料要点：
(1)Tool, tool maker as well as the expansion of brain. The brain coordinates the hand actions with signals from the eyes. Capable of hard physical labor and sensitive feeling to changes. Substitute of eyes for the blind.
(2)Ability to use fingers independently. Opposable thumb and double-grip. Complex manual skills.
4、模板：
(1)In the listening material, the professor discusses why the human hand is a valuable possession.
(2)First, ... For example, ...
(3)Second, ... For example, ...
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