The chief mineral products of the United States are in order of value, _____ .
A.petroleum, natural gas, and coal B.natural gas, petroleum, and coal C.coal, petroleum, and natural gas. D.coal, natural gas, and petroleum正确答案A
The chief mineral products of the United States are in order of value, _____ .
A.petroleum, natural gas, and coal B.natural gas, petroleum, and coal C.coal, petroleum, and natural gas. D.coal, natural gas, and petroleum正确答案A