21. (单选题) Many people want to buy it because.___. the price is reasonable; ___ , it.s rather durable.(本题3.0分)
A、 on one side, on the other side
B、 for one thing, for another
C、 on the one hand, on the other hand
D、 in one part, in the other part
出自:赤峰学院-大学英语