题目

阅读理解Whitman was one of the mostoriginal and inspiring American poets, well known for his art and his role as apoet. He devoted himself to poetry praising the native American's experience.As America'sfirst epic poem, Leaves of Grassran nine editions with more than 400 poems all written in free forms, that is, poetrywithout a fixed beat or regular rhyme scheme. The tide implies rebirth, renewal,or green life. As Whitman once said, Leavesof Grass was the outcropping of my own emotional and other personalnature—an attempt, from first to last, to put a person, a human being freely, fullya依据你所学的热学知识，下列说法正确的是（　　）A．炽热的铁水具有内能，冰冷的铁块不具有内能B．物体吸收热量，温度不一定升高C．汽车发动机用水做冷却物质，是因为水的比热容比较小D．天然气燃烧越充分，其热值越大