B. Choose the best answer（阅读短文,选择最恰当的答案）
In March 2026, astronomers reported a remarkable discovery about one of the brightest explosions in the universe. A team of researchers observed an extremely bright supernova（超新星）called SN 2024afav, located more than a billion light-years away. This type of supernova can shine up to 100 times brighter than a normal stellar explosion. Scientists have long thought that such
extreme brightness might come from a magnetar — a newly formed neutron star with an incredibly strong magnetic field that spins hundreds of times per second.
What made this event special was an unusual pattern in its light curve（亮度变化曲线）. Most supernovae brighten and then fade smoothly. However, SN 2024afav showed a series of brightness “bumps” that occurred at regular intervals. Even more interesting, the time between these bumps grew shorter and shorter, creating a kind of signal.
The research team, led by astrophysicist Joseph Farah, realized that no existing model could explain this pattern — until they considered an effect predicted by Einstein’s theory of general relativity. When a magnetar spins rapidly, it twists the space around itself. This causes any surrounding disk of falling material to wobble like a spinning top. As the disk wobbles, it periodically blocks some of the energy from the magnetar, creating the observed brightness bumps. As the disk falls inward over time, the wobbling speeds up, producing the chirping pattern. This marks the first time Einstein’s theory has been needed to explain the mechanics of a supernova.
() 1. When was the supernova SN 2024afav reported?
A. In 2024. B. In 2026.
C. More than a billion years ago. D. Last month.
() 2. What was unusual about the light curve of SN 2024afav?
A. It brightened and faded smoothly.
B. It was 100 times dimmer than expected.
C. It showed brightness bumps with a chirping pattern.
D. It stopped shining completely after a few days.
() 3. What is special with a magnetar?
A. It gives off no light, just like a black hole.
B. It has a strong magnetic field.
C. It is a kind of a supernova.
D. It is a galaxy billions of light-years away.
() 4. How did scientists explain the unusual pattern in the light curve?
A. They thought it was caused by another star.
B. They used Einstein’s theory to understand the wobbling disk around a magnetar.
C. They believed the supernova was not real.
D. They suggested it was a problem with the telescope.
() 5. What can we infer from the last paragraph?
A. This discovery proves that Einstein’s theory is wrong.
B. Einstein’s theory helps explain how this supernova worked.
C. Magnetars do not actually exist in space.
D. All supernovae are the same.
() 6. What can be the best title of the passage?
A. The Discovery of a New Supernova
B. The Life Cycle of Stars
C. How to Find Magnetars
D. Einstein’s Theory Helps Explain Bright Explosion

1. B 2. C 3. B 4. B 5. B 6. D

【分析】
做这类英语阅读理解选择题，需遵循“定位原文→匹配信息→排除干扰”的思路：1. 先通读全文把握核心内容（本文围绕超新星SN 2024afav的发现及解释展开）；2. 针对每个题目提取题干关键词，精准定位原文对应语句；3. 将选项与原文信息逐一比对，排除不符的干扰项，选出最恰当答案。
【解析】
1. 题干问SN 2024afav的报告时间，定位原文第一段第一句“In March 2026, astronomers reported a remarkable discovery... called SN 2024afav”，可知报告时间为2026年，故选B。
2. 题干问该超新星光曲线的异常之处，定位原文第二段：“SN 2024afav showed a series of brightness ‘bumps’ that occurred at regular intervals... creating a kind of signal（即chirping pattern）”，对应选项C，故选C。
3. 题干问磁星的特殊之处，定位原文第一段最后“magnetar — a newly formed neutron star with an incredibly strong magnetic field”，可知其特点是极强的磁场，故选B。
4. 题干问科学家如何解释光曲线的异常模式，定位原文第三段：“until they considered an effect predicted by Einstein’s theory of general relativity... the disk wobbles... creating the observed brightness bumps”，对应选项B，故选B。
5. 题干问从最后一段可推断什么，最后一段指出“这是首次用爱因斯坦理论解释超新星的机制”，说明爱因斯坦理论有助于解释该超新星的运作，故选B。
6. 题干问最佳标题，全文围绕“发现超新星，并用爱因斯坦理论解释其亮度模式”展开，对应选项D，故选D。
【答案】
1. B 2. C 3. B 4. B 5. B 6. D
【知识点】
英语阅读理解细节理解、英语阅读理解主旨大意、英语阅读理解推理判断
【点评】
本题为天文科普类英语阅读理解，侧重考查学生快速定位原文信息、理解细节及归纳主旨的能力，题目难度适中，只要学生能精准抓取题干关键词并对应原文内容，即可顺利解题。
【难度系数】
0.3