翻译题 12.In general, the tests work most effectively when the qualities to be measured can be most precisely defined and least effectively when what is to be measured or predicted cannot be well defined.
【正确答案】 一般说来，当要测定的特征能被十分精确地界定时，测试的结果最有效；反之，如果所要测定和预测的东西得不到明确地界定，那么测试的效果就最差。
【答案解析】