题目：
在冬天，用手摸户外的金属比摸木块感到更冷，这是因为
A．金属温度比木块温度低
B．金属密度比木块密度大
C．金属硬度比木的硬度大
D．金属是热的良导体，木是热的不良导体
答案：
答案：D
题目分析：要解答本题需掌握：热传递的特点以及不同物质导热能力不同．金属制品的导热能力比木头的强，当手触摸户外的金属制品时，手上的热很容易被传递出去，使手的温度降低，所以在寒冷的冬天，用手摸户外的金属制品和木头制品时，感到金属制品比木头制品凉．故选D．
在冬天，用手摸户外的金属比摸木块感到更冷，这是因为 A．金属温度比木块温度低 B
来源：www.tikuol.com
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