问题
单项选择题
We have had to raise the prices of our products because of the increase in the cost of ______ materials.
A.primitive
B.rough
C.original
D.raw
答案
参考答案:D
解析:[分析] 近义辨析。 A.primitive原始的,粗糙的,简单的,B.rough粗糙的,粗略的,大致的: C.original最初的,原始的,独创的:D.raw 未加工的,生的,处于自然状态的,此处是指原材料,因此答案为D。