【正确答案】
C
【答案解析】[解析] 画线词modify为动词,意为“修改,更改”。A项clarify意为“澄清,阐明”;例:He left the matter to clarify gradually by itself.他任凭此事的真相逐渐自行澄清。B项define意为“定义,规定”;例:We can define marital felicity accurately.我们能够给美满婚姻下个准确定义。C项change意为“改变,交换”;例:She has now changed into a happy, self-confident woman.她现在已经变成了一个快乐、自信的女人。D项develop意为“开发,发育,发展”;例:Develop cultural undertakings and industry.发展文化事业和文化产业。故本题选C。