题目

I’ve heard such a story.On a Friday______ , a poor young artist stood at the gate of the subway station, playing his violin. The music was_____, and many people______and put some money into the _____of the young man.The next night, the young artist took out a large piece of______and laid it on the ground. Then he began _______ The music sounded more pleasant. Some people gathered and they found the _____on that paper. “Last night, a gentleman put a(n)_____thing into my hat. Please come to get it back.” When the people saw that, they felt very curious and began to______what it could be. A冰在熔化过程中，下列判断正确的是（ ）A．吸收热量，温度不变B．内能不变，比热容不变C．比热容、内能、温度都不变D．比热容变大、内能增加，温度升高