例句與造句

1. It ' s necessary and urgent for teachers to understand the real aim of language testing , to improve testing papers , and to enhance the reliability and validity of testing papers
   因此，教師應(yīng)該了解語言測試的真實目的，改革考試題型，提高試卷的信度和效度。
2. It's difficult to find validity of test in a sentence. 用validity of test造句挺難的