From the end of April to the middle of May. Wenzhou city, the second model exam of grade three is generally from the end of April to mid-May before the middle school entrance exam. The second mode examination is a unified proposition of all cities. The examination paper, examination time, grading standard and answer are the same, but they are not graded uniformly. The examination covers Chinese, mathematics, English, physics, chemistry, biology, history, geography, morality and rule of law.