The problem of the standard educational tests is caused by

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问题 The problem of the standard educational tests is caused by
  
The standardized educational or psychological tests are widely used to aid in selecting, classifying, assigning, or promoting students, employees, and military personnel. They have been the target of recent attacks in books, magazines, the daily press, and even in Congress. The target is wrong, for in attacking the tests, critics divert attention from the fault that lies with ill-informed or incompetent users. The tests themselves are merely tools, with characteristics that can be measured with reasonable precision under specified conditions. Whether the results will be valuable, meaningless, or even misleading depends partly upon the tool itself but largely upon the user.
     All informed predictions of future performance are based upon some knowledge of relevant past performance. How well the predictions will be validated by later performance depends upon the amount, reliability, and appropriateness of the information used and on the skill and wisdom with which it is interpreted. Anyone who keeps careful score knows that the information available is always incomplete and that the predictions are always subject to error.
     Standardized tests should be considered in this context. They prove to be a quick, objective method of getting some kinds of information about what a person has learned, the skills he has developed, or the kind of person he is.

选项 A、the irrelevance of the past experience.
B、the incompleteness of the information available,
C、the weakness of the test.
D、the unpredictability of the future performance.

答案B

解析 本题属于推理排除题。短文第二段的内容是关于预测的性能和准确率的,预测是否准确依赖于获取到的信息的数量、可靠性以及适用性。因此可以推断,选项B为正确答案。
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