Through detailed expounding of these relations, the author, based himself on five year practice, attempts to prove the reliability of the grading standards in the Putonghua pro ficiency tests.

• 作者以这五年来测试实践作为论述的基本依据，试图通过对两者之间关系较为详细的阐述，进一步论证普通话水平测试等级标准的可靠性。