政策价值观对政策主体的影响主要有（）、引导、（）。
参考答案：规范；调节
一根48厘米的铁丝做成一个长方体框架，长、宽、高的比是3：2：1，把它糊成纸箱，容积是多少？
Wow! There are so many books. I really can't decide ____. [ ]
A. where to buy
B. which to buy
C. what to buy
D. how to buy
