题目

如图所示,在条形磁铁周围放置有甲、乙、丙三个小磁针,小磁针N极指向正确的是:A. 甲、乙对，丙错;                 B. 甲、丙对,乙错; C. 乙、丙对,甲错;                    D甲、乙丙都对 . 答案：A  In Beijing Olympics, Michael Phelps (迈克尔.菲尔普斯) swam into Olympic history, ____ the first athlete ____ the most gold medals ever.  A. became; to win         B. becoming; winning C. becoming; to win       D. to become; to win