单选题 Westinghouse is close to completing its transformation into ______ with the sale of its powergeneration business to Siemens of Germany for ＄1.53 billion.
A. a media company B. the company's media
C. the company media D. mass media's company

【正确答案】 A
【答案解析】[解析] 冠词用法辨析
西屋将发电部门卖给了德国西门子，即将完成向传媒公司的转变。不定冠词表示泛指，定冠词表示特指。本题中为泛指，明白这一点即可解题。