6、rcumstancesmustyouleaveⅢ.单项填空 1.Lastyearthenumberofstudentswhograduatedwithadrivinglicensereached200,000,a(n)________of40,000peryear.A.averageB.numberC.amountD.quantity答案 A [考查名词辨析。句意:去年毕业时就有驾照的学生数量已达到20万,平均每年4万。average“平均,平均数”;anumberof“大
7、量,许多”,修饰可数名词;anamountof“大量,许多”,修饰不可数名词;aquantityof“大量,许多”,修饰可数和不可数名词,根据句意选A项。]2.Thespaceagehas________awholenewbodyofscientificandtechnicalwords________.A.brought;intoexistenceB.come;intoexistenceCbrought;inexistenceD.called;inexistence答案 A [句意:太空时代使得一些全新的