【C16】A．replacementB．exchangeC．shiftD．substitute

A．meansB．approachC．shiftD．route

【C16】A．lobbyB．runC．substituteD．head

A．selectionB．optionC．alternativeD．substitute

If a phoneme is substituted for another in a word and the substitution results in a change

He is preparing for a lecture on stock ______.A、estateB、exchangeC、plagueD、situation

若输入文本有误是需要后删除，须按（)键。A.DeleteB.BacKspaceC.shiftD.Enter