【正确答案】 A

【答案解析】解析：desert vt．开小差，擅离(职守等)：离弃，抛弃(妻儿)(如：The soldiers deserted from the army／to the enemy．When he became poor all his friends deserted him．)(leave／betray都是及物动词，应直接跟宾语：可以说stay away from the army，是“不参军”的意思，而不是“开小差”。)。