46. What does the author say about students enrolled in online classes?
- A. They can access course materials easily.
- B. They are unmotivated to learn.
- C. They can learn at their own pace.
- D. They rarely fulfil the course requirements.
答案：B
答案句：First of all, students lack the desire to learn, and they simply complete their assignments to receive credit for a passing grade rather than genuinely engage with the course material.
参考译文：首先，学生缺乏学习的欲望，他们仅仅完成作业以获得及格分数，而不是真正地参与课程材料。
定位线索：题干“students enrolled in online classes”→答案句“students lack the desire to learn”；文中“lack the desire to learn”对应选项B“unmotivated to learn”。
解析：题干问作者对在线课程学生的看法，答案句直接指出学生“lack the desire to learn”，即缺乏学习动力，与选项B“unmotivated to learn”同义。选项A“容易获取课程材料”和C“按自己的节奏学习”是文章开头提到的宣传优点，但作者随后否定了；选项D“很少满足课程要求”与原文“complete their assignments”矛盾。
49. What problem may arise if classes go online?
- A. More students may find it easy to be absent from them.
- B. Teachers will worry about poor internet connections.
- C. Some students may have difficulty attending them.
- D. Schools with limited resources will be at a disadvantage.
答案：C
答案句：Online classes also require either a computer or laptop and a reliable internet connection. Not all students have access to these types of resources, whether it is for financial or other reasons, and some students can be put at a disadvantage.
参考译文：在线课程还需要电脑或笔记本电脑以及可靠的互联网连接。并非所有学生都能获得这些资源，无论是由于经济还是其他原因，一些学生可能会处于不利地位。
定位线索：题干“classes go online”→答案句“Online classes also require”；文中“some students can be put at a disadvantage”对应选项C“some students may have difficulty attending them”。
解析：题干问课程上线可能出现的问题，答案句指出并非所有学生都有电脑和网络，一些学生会处于不利地位，即难以参加课程，与选项C一致。选项A“更容易缺课”无中生有；选项B“教师担心网络”偷换主语，原文是学生；选项D“资源有限的学校处于劣势”范围扩大，原文说的是学生。
50. What does the author think constitutes a key part of genuine education?
- A. Acquisition of useful knowledge.
- B. Training of real-life skills on campus.
- C. Development of students' personalities.
- D. Cultivation of analytical thinking ability.
答案：D
答案句：However, they fail to provide a genuine education with an emphasis on convenience rather than critical thinking. We need restructured online classes in which students can have a learning experience that will actually provide quality education.
参考译文：然而，它们未能提供真正的教育，而是强调便利而非批判性思维。我们需要重构在线课程，让学生能获得真正提供优质教育的学习体验。
定位线索：题干“genuine education”→答案句“fail to provide a genuine education”；文中“critical thinking”对应选项D“analytical thinking ability”。
解析：题干问作者认为真正教育的关键部分是什么，答案句指出在线课程强调便利而非批判性思维，暗示真正教育应包含批判性思维，与选项D“培养分析思维能力”同义。选项A“获取有用知识”、B“校园现实技能训练”、C“发展个性”在原文均未提及。