职教组卷基于海量职教高考试题库建立的在线组卷及学习系统
职教组卷
  • 题型:英语知识运用 题类:历年真题 难易度:较易

    The number of medical schools reached 18 in the early 1990s and ______ around that level ever since.
    A. are remaining                                                          B. have remained       C. is remaining                                                             D. has remained
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