2009年上海生物学高考答卷倾向性问题的表现与教学反思2009年上海生物學高攷答捲傾嚮性問題的錶現與教學反思 2009년상해생물학고고답권경향성문제적표현여교학반사 The trend problems of knowledge defect found in the Shanghai biology test paper for the national college entrance exam in China in 2009 and some suggestions to the improvement of biology teaching in the future