第30题: [单项选择]The young man asked his parents not to worry because he was full of optimism about his career. A. confidence B. motivation C. imagination D. resolution 参考答案:A 答案解析:[解析] 各项的意思是:confidence自信,信心;motivation动机,动力;imagination想象,想象力;resolution决心,坚定。划线单词optimism的意思是:乐观,乐观