精选优质文档-倾情为你奉上1998年全国硕士研究生入学统一考试英语试题Section IStructure and VocabularyPart ADirections:Beneath each of the following sentences, there are four choices marked A, B, C and D. Choose the one that best completes the sentence. Mark your answer on the ANSWER SHEET 1 by blackening the corresponding letter in the brackets with a pencil. (5 points)Example:I have been to the Great Wall three times _ 1979.A fromB afterC forD sinceThe sentence should read, “