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What subject do you worry about the most at school? Many students worry about math. Some students can't sleep well the day before a math exam. Others may feel very nervous during the exam itself. But there might be a way to make the subject less stressful (压力大的).
“For people who are worried about math, posture (姿势) makes a big difference,” Erik Peper from San Francisco State University told the Daily Mail. That's right—sitting up straight can help you do better on math exams.
Scientists tested 120 college students. They asked them to do a simple math exam while sitting in a slumped-over (趴倒的) posture, or sitting up straight. After the test, 55 percent of the students said the exam was easier to do if they were sitting up straight.
Slumping over is a defensive (戒备的) posture. It can bring about bad memories in the body and brain. This can stop you from thinking clearly, Peper said.
Students who were not nervous about taking the math exam did not necessarily benefit from better posture. But they did find that doing math while slumped over was more difficult, Science Daily reported.
Good posture isn't just helpful for taking math exams. Sportspeople, musicians and public speakers can all benefit from better posture. When you feel stressed out, you can also try to sit up straight or stand tall. It can help you feel more certain and focus better.
12. What posture can make people feel less stressed during math exams?
A. Sitting up straight.
B. Hanging your head.
C. Lying on your back.
D. Raising one hand.
13. What did the scientists ask the college students to do during the test?
A. To do sit-ups.
B. To count numbers.
C. To think carefully.
D. To sit in different postures.
14. The fourth paragraph is written to explain
A. why slumping over makes exams harder to do
B. why slumping over is bad for one's health
C. why some people slump over during exams
D. why people are nervous during math exams
15. Which of the following is the best title for the passage?
A. Slump over to Take Exams
B. Sit up to Do Math
C. Better Posture for Nervous Students
D. Good Advice for Better Exams
What subject do you worry about the most at school? Many students worry about math. Some students can't sleep well the day before a math exam. Others may feel very nervous during the exam itself. But there might be a way to make the subject less stressful (压力大的).
“For people who are worried about math, posture (姿势) makes a big difference,” Erik Peper from San Francisco State University told the Daily Mail. That's right—sitting up straight can help you do better on math exams.
Scientists tested 120 college students. They asked them to do a simple math exam while sitting in a slumped-over (趴倒的) posture, or sitting up straight. After the test, 55 percent of the students said the exam was easier to do if they were sitting up straight.
Slumping over is a defensive (戒备的) posture. It can bring about bad memories in the body and brain. This can stop you from thinking clearly, Peper said.
Students who were not nervous about taking the math exam did not necessarily benefit from better posture. But they did find that doing math while slumped over was more difficult, Science Daily reported.
Good posture isn't just helpful for taking math exams. Sportspeople, musicians and public speakers can all benefit from better posture. When you feel stressed out, you can also try to sit up straight or stand tall. It can help you feel more certain and focus better.
12. What posture can make people feel less stressed during math exams?
A. Sitting up straight.
B. Hanging your head.
C. Lying on your back.
D. Raising one hand.
13. What did the scientists ask the college students to do during the test?
A. To do sit-ups.
B. To count numbers.
C. To think carefully.
D. To sit in different postures.
14. The fourth paragraph is written to explain
A
.A. why slumping over makes exams harder to do
B. why slumping over is bad for one's health
C. why some people slump over during exams
D. why people are nervous during math exams
15. Which of the following is the best title for the passage?
A. Slump over to Take Exams
B. Sit up to Do Math
C. Better Posture for Nervous Students
D. Good Advice for Better Exams
答案
12.A 13.D 14.A 15.B
解析
【分析】
这是一篇科普类说明文阅读理解，解题时可以先浏览4道题干，明确每道题的设问方向，再带着问题回到原文对应段落定位关键信息，逐一比对选项排除错误项：
1. 针对12题，直接定位和“数学考试减压、姿势”相关的原文表述，就能找到对应答案；
2. 针对13题，定位到描述科学家实验设置的第三段，提取对学生的要求即可匹配选项；
3. 针对14题，结合前文得出的“趴倒答题难度更高”的结论，分析第四段的内容逻辑，就能明确段落的解释作用；
4. 针对15题，抓住全文核心讨论的“坐姿和数学答题表现的关联”主线，排除偏离核心的干扰选项即可选出最佳标题。
【解析】
12. 根据原文第二段“That's right—sitting up straight can help you do better on math exams.”以及第三段的测试结果“55 percent of the students said the exam was easier to do if they were sitting up straight”，可知坐直的姿势能降低数学考试的压力，让答题更顺利，A选项符合原文表述。
13. 根据原文第三段“They asked them to do a simple math exam while sitting in a slumped-over (趴倒的) posture, or sitting up straight.”可知科学家要求学生用不同的坐姿完成数学测试，D选项符合实验设置的要求。
14. 第四段说明趴倒属于戒备姿势，会唤起身体和大脑的负面记忆，阻碍人清晰思考，正是在解释前文提到的“趴倒答题难度更高”的原因，也就是为什么趴倒会让考试更难，A选项符合段落写作目的。
15. 全文围绕“坐直的姿势能帮助学生在数学考试中降低压力、发挥更好”展开，核心关键词是“正确坐姿”和“数学答题”，B选项精准覆盖全文核心内容；A表意和原文相反，C没有点明核心的数学考试场景，D表述过于宽泛，均不符合要求。
【答案】
12.A 13.D 14.A 15.B
【知识点】
阅读理解细节定位，主旨大意判断，说明文信息提取
【点评】
本篇阅读整体以细节考查为主，大部分题目都可以通过原文直接定位得到答案，难度偏低，仅最后一道主旨题需要学生区分核心主题和宽泛表述的干扰项，提醒学生选择标题时要优先覆盖全文最核心的讨论对象，不要被片面的次要信息误导。
【难度系数】
0.75
这是一篇科普类说明文阅读理解，解题时可以先浏览4道题干，明确每道题的设问方向，再带着问题回到原文对应段落定位关键信息，逐一比对选项排除错误项：
1. 针对12题，直接定位和“数学考试减压、姿势”相关的原文表述，就能找到对应答案；
2. 针对13题，定位到描述科学家实验设置的第三段，提取对学生的要求即可匹配选项；
3. 针对14题，结合前文得出的“趴倒答题难度更高”的结论，分析第四段的内容逻辑，就能明确段落的解释作用；
4. 针对15题，抓住全文核心讨论的“坐姿和数学答题表现的关联”主线，排除偏离核心的干扰选项即可选出最佳标题。
【解析】
12. 根据原文第二段“That's right—sitting up straight can help you do better on math exams.”以及第三段的测试结果“55 percent of the students said the exam was easier to do if they were sitting up straight”，可知坐直的姿势能降低数学考试的压力，让答题更顺利，A选项符合原文表述。
13. 根据原文第三段“They asked them to do a simple math exam while sitting in a slumped-over (趴倒的) posture, or sitting up straight.”可知科学家要求学生用不同的坐姿完成数学测试，D选项符合实验设置的要求。
14. 第四段说明趴倒属于戒备姿势，会唤起身体和大脑的负面记忆，阻碍人清晰思考，正是在解释前文提到的“趴倒答题难度更高”的原因，也就是为什么趴倒会让考试更难，A选项符合段落写作目的。
15. 全文围绕“坐直的姿势能帮助学生在数学考试中降低压力、发挥更好”展开，核心关键词是“正确坐姿”和“数学答题”，B选项精准覆盖全文核心内容；A表意和原文相反，C没有点明核心的数学考试场景，D表述过于宽泛，均不符合要求。
【答案】
12.A 13.D 14.A 15.B
【知识点】
阅读理解细节定位，主旨大意判断，说明文信息提取
【点评】
本篇阅读整体以细节考查为主，大部分题目都可以通过原文直接定位得到答案，难度偏低，仅最后一道主旨题需要学生区分核心主题和宽泛表述的干扰项，提醒学生选择标题时要优先覆盖全文最核心的讨论对象，不要被片面的次要信息误导。
【难度系数】
0.75
