Of all the goals of the education reform movement, none is more difficult th

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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 (1)______ means of separating good from bad instructors.
Test scores are an(2)______ indicator of quality because too many factors outside of the teachers’ control can influence student(3)______ from year to year—or even from classroom to classroom during the same year. Often, more than half of those teachers (4)______ as the poorest performers one year will be judged average or above average the next, and the results are(5)______ as bad for teachers with (6)______ classes during the same year.
(7)______, there’s a far more direct approach: measuring the amount of (8)______ a teacher spends delivering relevant instruction—(9)______, how much teaching a teacher actually gets done in a school day.
This is hardly a new(10)______. Thirty years ago two studies using this approach found that some teachers were able to deliver(11)______ 14 more weeks a year of relevant instruction than their less efficient(12)______.
There was no(13)______ to their success: it was obvious that the efficient teachers(14)______ strictly to the curriculum, maintained stern discipline and(15)______ non-instructional activities, like(16)______ unessential classroom business when they(17)______ focused on the curriculum.
And both studies found that the teachers who(18)______ more were also the teachers who(19)______ students who performed well on(20)______ tests. [br] (13)

选项 A、exception
B、objection
C、secret
D、obstacle

答案 C

解析短语搭配题。根据后面一句话的描述，效率高的老师具备很多特点，可以知道此处应该填一个名词，描述这些人获得成功的方法途径。所以选C项．secret“秘密，秘诀”。exception“例外”，objection“反对”，obstacle“阻碍”。

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Of all the goals of the education reform movement, none is more difficult th

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