Socratic Tutor Warming Quiz Results

Student quiz grades on a global warming quiz, assessing the effectiveness of the Socratic Tutor tool. The data shows a statistically significant improvement among the students who used the tutor compared to the control group. The values are the total number of questions correct out of three; this data set does not contain the individual question answers. Below are the quiz questions:

1. Which statement is most true?
A) We have no evidence of global warming in the past or the future.
B) We have evidence of global warming in the past but not the future.
C) We have evidence of global warming in the future but not the past.
D) We have evidence of global warming in both the past and the future.

2. The Little Ice Age ended
A) Because the industrial revolution added large amounts of CO2 to the atmosphere.
B) Before the industrial revolution added large amounts of CO2 to the atmosphere.
C) In spite of constant CO2 levels in the atmosphere.
D) Because CO2 levels in the atmosphere dropped.

3. Which of these is most unlikely?
A) Global warming is entirely manmade.
B) Global warming is entirely from natural causes.
C) Global warming is caused by a combination of human and natural causes.
D) Global warming could reverse and the earth could cool.

本数据集收录学生在全球变暖主题测验中的得分情况，用于评估苏格拉底式导师（Socratic Tutor）工具的教学效果。数据表明，使用该导师工具的学生群体相较于对照组，成绩提升具备统计学显著性。数据记录的是3道试题中答对的总题数，本数据集未包含单道试题的具体作答详情。以下为本次测验的试题：

1. 以下哪项表述最为准确？
A) 我们既无全球变暖在过去与未来的相关证据。
B) 我们有过去全球变暖的相关证据，但未来没有。
C) 我们有未来全球变暖的相关证据，但过去没有。
D) 我们在过去和未来都有全球变暖的相关证据。

2. 小冰期的结束
A) 是因为工业革命向大气中排放了大量二氧化碳。
B) 早于工业革命向大气中排放大量二氧化碳的时间。
C) 尽管大气中二氧化碳水平保持恒定。
D) 是因为大气中二氧化碳水平下降。

3. 以下哪项最不可能发生？
A) 全球变暖完全由人为因素导致。
B) 全球变暖完全由自然因素导致。
C) 全球变暖由人为与自然因素共同导致。
D) 全球变暖可能出现逆转，地球将进入冷却阶段。