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词数：347 words
难度：★★★☆☆
小贴士：
阅读过程中要有意识地进行积累，一类是陌生的单词、词组，一类是地道但很常见的意思表达，比如上期划线句中的avoid the downsides：避免弊端，通过积累，可以在写作中尝试用起来，把写作能力提高到next level！
——大橙子留
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上期划线句答案
This seems to be something that we are able to do because walking on the ground is both an energetically efficient way to get around. It also avoids the downsides of spending our lives in trees — having to support all of our weight on tree branches and exist at the mercy of gravity requires a lot of energy.
这似乎是我们能够做到的一件事，因为在地面上行走不仅是一种节能高效的移动方式，同时也避免了生活在树上的各种弊端——需要依靠树枝承载全部体重，并且完全受制于重力，这会消耗大量的能量。
1.at the mercy of 受制于，无法控制
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本期内容
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双语阅读
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Earlier this year, scientists stumbled upon a potential new treatment for hereditary-patterned baldness, the most common cause of hair loss in both men and women worldwide. It all started with research on a sugar that naturally occurs in the body and helps form DNA: the 'deoxyribose' part of deoxyribonucleic acid.
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While studying how these sugars heal the wounds of mice when applied topically, scientists at the University of Sheffield and COMSATS University in Pakistan noticed that the fur around the lesions was growing back faster than in untreated mice.
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Hereditary-patterned baldness, or androgenic alopecia, is a natural condition caused by genetics, hormone levels, and aging, and it presents differently in males and females. The disorder impacts up to 40 percent of the population, and yet the US Food and Drug Administration (FDA) has only approved two drugs to treat the condition thus far. While over-the-counter minoxidil can work to slow hair loss and promote some regrowth, it doesn't work for all those experiencing hair loss.
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If minoxidil isn't effective, then male patients can turn to finasteride (brand name Propecia) – a prescribed oral drug that inhibits the conversion of testosterone to dihydrotestosterone. It's not yet approved for female patients. Finasteride can slow hair loss in about 80 to 90 percent of male patients, but it needs to be taken continuously once it is started. The drug can be associated with unwanted, sometimes severe side effects, such as erectile dysfunction, testicular or breast pain, reduced libido, and depression. Together, the team designed a biodegradable, non-toxic gel made from deoxyribose, and applied the treatment to mouse models of male-pattern baldness.
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Minoxidil was also tested on balding mouse models, and some of the animals received a dose of both sugar gel and minoxidil for good measure. Compared to mice that received a gel without any medicine, those that received a gel with deoxyribose sugar began to sprout new hair follicles. Both minoxidil and the sugar gel promoted 80 to 90 percent hair regrowth in mice with male pattern baldness. Combining the treatments, however, did not make much more of a difference.
本文节选自：Science Alert
发布时间：2024.12.20
作者：Carly Cassella
原文标题：Surprise Hair Loss Breakthrough: A Sugar Gel Triggers Robust Regrowth
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写作句总结
原句：While studying how these sugars heal the wounds of mice when applied topically, scientists at the University of Sheffield and COMSATS University in Pakistan noticed that the fur around the lesions was growing back faster than in untreated mice.
结构：While studying X, Y noticed that Z.
例句：While studying the impact of physical exercise on mental health, researchers noticed that regular workouts significantly improved participants' mood and energy levels.
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阅读理解题
What does the word "stumbled upon" in the first sentence most likely mean in the context of the article?
A) Carefully discovered
B) Accidentally found
C) Thoroughly researched
D) Deliberately investigated
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全文概括
Research on a sugar found in DNA, deoxyribose, shows promise as a new treatment for hereditary hair loss. Scientists observed faster hair regrowth in mice treated with a deoxyribose gel, achieving results comparable to minoxidil, a current FDA-approved treatment. The study suggests deoxyribose gel could offer a safer and more effective alternative, particularly since current treatments have limitations and potential side effects. The gel's biodegradable and non-toxic nature further enhances its appeal as a potential therapy. Further research is needed to confirm the efficacy and safety in humans.
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打卡作业
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翻译 | 大橙子
校对 | 慢慢
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划线句讲解 | 流木
写作句总结 | 大橙子
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