剪刃可按（）等分类。
A.用途
B.形状
C.材质
D.使用方法
E.厚度
参考答案：A, B, C, D
核心产品是客户真正所购买的基本服务或利益，对于物流活动来说，在这一层次上体现为货物在空间的位移和保存。
Where someone is born and what a person looks like is not as important as ____ he or she grows up to be.
A．which
B．what
C．how
D．where
