题目

在温度相同环境下，下列关于导体的电阻跟导体的长度有关的说法中正确的是…（   ）A．长度相同的铜丝，横截面积小的电阻大                         B．横截面积相同的铜丝，长度短的电阻小C．横截面积相同的铁丝和铜丝，铁丝的电阻小D．长度和横截面积都相同的铁丝和铜丝，铁丝的电阻大 I have been convinced that the print media are usually more ____and more reliable than television．A．accurateB．ridiculousC．urgentD．shallow