【词汇讲解】
1.enthusiasm n. 热情,热心;热衷的事物
如：His advancement to the position of manager was greeted with enthusiasm.
他被提升为经理, 大家都为之欢呼。
His enthusiasm breathed new life into the company.
他的热情给公司注入了新的生命。
2.lighten up 放松, 不要生气
如：Every time I'd ask the question, it seemed he lightened up a bit more.
每一次我问这个问题, 他都好像变得更轻松一点。
3.response n. 反应, 响应; 回答
如：His cool response suggested that he didn't like the idea.
他反应冷淡表明他并不喜欢这个主意.
Millions of people gave freely in response to the famine appeal.
千百万人响应救灾呼吁而慷慨解囊.