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: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。