题目

9.In manufacturing,cheaper materials are constantly being substituted _____ the better,more expensive kind.A.for B.by C.with D.out10.A bad cold may _ to pneumonia.A.lead B.cause C.result D.give

9.In manufacturing,cheaper materials are constantly being substituted ___________ the better,more expensive kind.A.for B.by C.with D.out10.A bad cold may _______ to pneumonia.A.lead B.cause C.result D.give

题目解答

答案

A.for （be being substituted for取代）A.lead to导致（B.cause vt.）（ C.result in）（D.give vt.）