题目

人是胖还是瘦与遗传因素有关，而与生活条件、膳食结构、参加体育锻炼等无关。                                                （    ） 答案：X The farm they spent as much time as they could ________ a new look． [　　] A． on has taken on B． has taken on C． which has taken on D． on taken