私醫聯招 英文歷屆試題｜第 379 題

Do teachers who know more about their subjects have a more positive impact on their students? When we look at teachers' knowledge of facts and concepts,  (26)  measured by test scores and college grades, the relationship to student learning is unclear and may be indirect. Teachers who know more facts about their subjects do not necessarily have students who learn more. But teachers who know more may make clearer presentations and recognize student difficulties more  (27) . They are prepared for any student questions and do not have to be evasive or vague in their answers.  (28) , knowledge is necessary but not  (29)  for effective teaching because being more knowledgeable helps teachers be clearer and more organized.