()naturalresourcescanbeofgreatimportance,theyarenotnecessaryforaneconomytobehighlyproductiveinproducinggoodsandservicesfortheexistingsocieties.
A.Yet B.But C.After all D.Although正确答案D
()naturalresourcescanbeofgreatimportance,theyarenotnecessaryforaneconomytobehighlyproductiveinproducinggoodsandservicesfortheexistingsocieties.
A.Yet B.But C.After all D.Although正确答案D