This is the main use that the scientists make (___) of natural resources.A.it B.which C.use D./
题目
This is the main use that the scientists make (___) of natural resources.A.it B.which C.use D./
答案
答案是：D
that the scientists make of 是定语从句,修饰use.make use of 为固定短语,意思是“利用”
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