语法与词汇 _____ is designed to discover mainly what the testee does not know about the language. A test of such kind can help the teacher to find out what is wrong with the previous learning and what should be included in the future teaching work.无
【正确答案】 C
【答案解析】诊断测试（ diagnostic test） ， 是为了检验学生在某个阶段或在学习某些语言项目上的效果， 即掌握了哪些项目， 更重要的是要检查考生在哪些项目上有欠缺， 以便在教学上采取改进措施。 因此选C。