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Of all the goals of the education reform movement, none is more difficult than developing an objective method to assess teachers

admin2015-03-26  43
问题     Of all the goals of the education reform movement, none is more difficult than developing an objective method to assess teachers. Studies show that over time, test scores do not provide a【C1】______ means of separating good from bad instructors.
    Test scores are an【C2】______ indicator of quality because too many factors outside of the teachers’ control can influence student【C3】______ from year to year—or even from classroom to classroom during the same year. Often, more than half of those teachers【C4】______ as the poorest performers one year will be judged average or above average the next, and the results are【C5】______ as bad for teachers with【C6】______ classes during the same year.
    【C7】______, there’s a far more direct approach: measuring the amount of【C8】______ a teacher spends delivering relevant instruction—【C9】______, how much teaching a teacher actually gets done in a school day.
    This is hardly a new【C10】______. Thirty years ago two studies using this approach found that some teachers were able to deliver【C11】______ 14 more weeks a year of relevant instruction than their less efficient【C12】______.
    There was no【C13】______ to their success: it was obvious that the efficient teachers【C14】______ strictly to the curriculum, maintained stern discipline and【C15】______ non-instructional activities, like【C16】______ unessential classroom business when they【C17】______ focused on the curriculum.
    And both studies found that the teachers who【C18】______ more were also the teachers who【C19】______ students who performed well on【C20】______ tests.
【C17】
选项 A、must have been
B、may have been
C、could have been
D、should have been
答案D
解析 语法题。这句话前半部分说，高效率的老师应该严格遵守课程表，纪律严明，尽量减少与教学无关的活动。然后后半部分举例说明，比如他们本应该聚焦于课程之上，但却去组织无关的课堂活动。所以when引导的应该是一个虚拟句，所以选D项，should have been，表示本应该做什么但却没做。
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