单选题 The history helps explain the vexing dispute between the European Union and the United States over the greatest threat to privacy yet conceived: the hundreds of millions of personal dossiers in computerized and networked databases.
【正确答案】 A
【答案解析】[解析] troublesome麻烦的，令人讨厌的；astonishing可惊异的，惊人的；everlasting永 恒的，耐用的；connicting相冲突的，不一致的。划线单词vexing的意思是“使人麻烦的”。 根据句意可知，应选择A。