在下列各图中，能正确描述铁锭熔成铁汁过程中温度变化情况的是（ ）
—Did you have fun _____________ on your last day off?
—No, I didn't. there were too many people and it was really crowded.
作者通过____手法使读者体会到这首歌强大的感染力。
