A. actually B. calculating C. conducting D. conformed E. criticall

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问题 A. actually B. calculating C. conducting D. conformed    E. critically
F. identified G. inadequate H. insight I. intricate    J. motivation
K. multiple L. peers    M. performance  N. recommended O. standardized
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 consistent means of separating good from bad instructors. Test scores are an 【C1】______ indicator of quality because too many factors outside of the teachers’ control can influence student【C2】______from year to year—or even from classroom to classroom during the same year. Often, more than half of those teachers 【C3】______ as the poorest performers one year will be judged average or above average the next, and the results are almost as bad for teachers with 【C4】______ classes during the same year.
Fortunately, there’s a far more direct approach: measuring the amount of time a teacher spends delivering relevant instruction—in other words, how much teaching a teacher 【C5】______ gets done in a school day. This is hardly a new 【C6】______. Thirty years ago two studies using this approach found that some teachers were able to deliver as much as 14 more weeks a year of relevant instruction than their less efficient 【C7】______. There was no secret to their success: it was obvious that the efficient teachers 【C8】______ strictly to the curriculum, maintained stem discipline and
minimized non-instructional activities, like 【C9】______ unessential classroom business when they should have been focused on the curriculum.
And both studies found that the teachers who taught more were also the teachers who produced students who performed well on 【C10】______ tests. [br] 【C4】

选项

答案 K

解析空格填入名词或形容词，修饰classes。第1段第3句提到，太多的因素都在教师的控制范围之外，情况年年不同，甚至同一年各个班的情况也不同(from classroom to classroom during the same year)。由此推测，这里是指同一年不同班级的情况，multiple“许多的”代入句中，语义通顺。

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