请结合写作要求对材料中出现的主体段内容进行排序。Directions: For this part, you are allowed 30 minutes to write an essay on the importance of social practice for college students. You should write at least 120 words but no more than 180 words.①Taking what has been discussed above, social practice is of vital significance for college students both in their academic performance and future career development.②On the other hand, social experience they accumulate in real practice can help them stand out from other competitors, which is definitely beneficial for their future job-hunting.③On one hand, they can put theoretical knowledge into practice and test whether they have mastered the required skills yet.请根据写作要求作答。A、③①B、②①C、③②