Second Lesson Quiz
测验为单选题，核心规则是：
1.唯一正确性：题干下方通常有4 个备选项，要求选出一个最符合题意的正确答案。
2.评分原则：选对得分（每题5分）；错选不得分。
3.排他与最优：若所有选项看起来都部分正确，应遵循“最佳原则”，挑选最全面、最直接贴合题干表述的一项。
测验为单选题，核心规则是：
1.唯一正确性：题干下方通常有4 个备选项，要求选出一个最符合题意的正确答案。
2.评分原则：选对得分（每题5分）；错选不得分。
3.排他与最优：若所有选项看起来都部分正确，应遵循“最佳原则”，挑选最全面、最直接贴合题干表述的一项。
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