48. What does the author imply about the classes at present?
- A. They facilitate students' independent learning.
- B. They help students form closer relationships.
- C. They have more older students than before.
- D. They are much bigger than is desirable.
答案：D
答案句：If we replaced half of our administrative staff with classroom teachers, we might actually get a majority of our classes back to 20or fewer students per teacher.
参考译文：如果我们用课堂教师替换一半的行政人员，我们实际上可能让大多数班级恢复到每位教师20名或更少的学生。
定位线索：题干“classes at present”→答案句取自第2段“get a majority of our classes back to 20or fewer students per teacher”；文中“back to 20 or fewer”暗示现在班级人数超过20，对应选项D“much bigger than is desirable”。
解析：题干问作者对当前班级的暗示。答案句说“恢复到每位教师20名或更少的学生”，“恢复”一词暗示当前班级人数超过20，即班级过大，对应选项D。选项A“促进独立学习”和选项B“帮助形成更亲密关系”是作者设想的小班好处，但非当前状态；选项C“年长学生更多”在原文未提及。
50. What is the author's suggestion for improving university teaching?
- A. Creating an environment for teachers to share their teaching experiences.
- B. Hiring more classroom teachers and allowing them to teach in their own way.
- C. Using high technology in classrooms and promoting exchange of information.
- D. Cutting down meetings and encouraging administrative staff to go to classrooms.
答案：B
答案句：I offer a simple proposition in response: Many of our problems--class attendance, educational success, student happiness and well-being--might be improved by cutting down the bureaucratic ( 官僚的) mechanisms and meetings and instead hiring an army of good teachers. … The teachers must be free to teach in their own way--the curriculum should be flexible enough so that they can use their individual talents to achieve the goals of the course.
参考译文：我提出一个简单的建议作为回应：我们的许多问题——课堂出勤、教育成功、学生幸福和福祉——可能通过削减官僚机制和会议，转而雇佣一大批好教师来改善。……教师必须能够自由地以自己的方式教学——课程应该足够灵活，以便他们能利用个人才能实现课程目标。
定位线索：题干“suggestion for improving university teaching”→答案句取自第2段和第3段“hiring an army of good teachers”和“free to teach in their own way”；文中“hiring an army of good teachers”对应选项B“Hiring more classroom teachers”，“free to teach in their own way”对应选项B“allowing them to teach in their own way”。
解析：题干问作者改善大学教学的建议。答案句提出两点：雇佣更多好教师和允许教师自由教学，选项B完整概括了这两点。选项A“分享教学经验”在原文未提及；选项C“使用高科技”是作者批评的现状（信息交流中心）；选项D“鼓励行政人员去教室”与作者主张削减行政人员相反，偷换概念。