快⬆️⬆️点击上方蓝字关注并星标这个公众号，一起涨姿势～
词数：459 words
难度：★★☆☆☆
小贴士：
后台聊天对话框：
回复“考研”获取2025考研英语等备考资料
回复“四六级”获取四六级历年真题及解析
回复“PDF”获取本文PDF版内容；
回复“笔记”获取阅读、新题型、完形填空、写作模板等笔记
点击文末左下角“阅读原文”可获得PDF版内容、每月文章合集
——大橙子留
✦ +
+
上期划线句答案
And like many other people, I have a sprawling digital footprint; many of my stored videos have been either sent to or received from at least one other person who is also storing them on one or two cloud platforms.
而且像许多人一样，我的数字足迹也非常庞大；我存储的很多视频都至少曾分享给一个人，而这些人也在一个或多个云平台上存储着这些视频。
✦ +
+
本期内容
◆
双语阅读
Para.1
The marshmallows notwithstanding, sweet potatoes are one of the healthiest foods on your Thanksgiving table. They’re full of nutrients that keep your systems humming and your blood sugar steady, and they can even reduce your cancer risk.
Para.2
Sweet potatoes are a good source of potassium, an electrolyte that you sweat out when you exercise. The body relies on potassium, which carries a charge, to send electrical signals between nerves, said Holly Gilligan, a registered dietitian at the University of Rochester Medical Center’s Fitness Science program. Potassium helps to keep your nerves firing, your heart beating and your muscles contracting. One medium cooked sweet potato contains around 350 milligrams of potassium — about 12 percent of the recommended daily amount for an average adult and more than six times what you get in a 12-ounce bottle of Gatorade.
Para.3
Potassium also helps you maintain a healthy blood pressure. “The body is constantly trying to keep potassium in balance with another electrolyte: sodium,” said Dave Bridges, a biochemist and associate professor of nutritional sciences at the University of Michigan. Sodium causes the body to hold onto fluids, increasing the volume of our blood; if there’s too much sodium, blood pressure can become unhealthily high, he explained. Potassium stimulates the kidneys to excrete sodium and also causes blood vessels to relax.
Para.4
Sweet potatoes get their signature flavor from naturally occurring sugars; one medium sweet potato has around nine grams. “For some context, that’s about a quarter of what you would find in a regular soda,” Dr. Bridges said. But unlike a sugary beverage, sweet potatoes are relatively high in dietary fiber (about four grams per potato). Fiber is a lot of work for the body to digest, which slows down the breakdown of sugar, said Judy Simon, a clinical dietitian at the University of Washington Medical Center in Seattle. Blood sugar levels spike when you consume soda, but when you eat a sweet potato, blood sugar levels rise gradually.
Para.5
One medium sweet potato contains more than 100 percent of the recommended daily amount of vitamin A — primarily in the form of beta-carotene, which gives the vegetable its vibrant orange color.In addition, a medium sweet potato contains roughly 20 percent of the recommended daily amount of vitamin C. Both vitamins are powerful antioxidants that can neutralize free radicals — unstable oxygen molecules that can damage cells and DNA, increasing the risk of cancer and other diseases. Vitamin A is also an important building block for proteins inside the retina that detect light, making it essential for vision, Dr. Bridges said. And the body needs vitamin C to absorb iron, Ms. Simon said. Sweet potatoes also contain high levels of copper and manganese, which the body uses to produce antioxidants in-house, Dr. Bridges said.
本文节选自：The New York Times（纽约时报）
发布时间：2024.11.19
作者：ISOBEL WHITCOMB
原文标题：How Healthy Are Sweet Potatoes?
◆
写作句总结
原句：Vitamin A is also an important building block for proteins inside the retina that detect light, making it essential for vision, Dr. Bridges said.
结构：X is also an important building block for Y that Z, making it essential for W.
例句：Perseverance is also an important building block for success that helps you overcome obstacles, making it essential for achieving your goals.
◆
阅读理解题
What does the word "humming" in the first paragraph most likely mean?
A) Singing
B) Thriving
C) Moving quickly
D) Vibrating
◆
全文概括
Sweet potatoes are nutritious food, offering significant health benefits. They are a good source of potassium, crucial for nerve function, heart health, and blood pressure regulation by counteracting the effects of sodium. Their natural sugars are balanced by high fiber content, leading to a gradual release of sugar into the bloodstream. Furthermore, sweet potatoes are rich in vitamins A and C, powerful antioxidants that protect against cell damage, and also contain other beneficial minerals like copper and manganese. These combined nutrients make sweet potatoes a healthy and valuable addition to one's diet.
◆
打卡作业
翻译文章中的划线句，文末留言打卡，下期推送会在文章开头处公布参考翻译答案，大家一起来学习英语吧~
翻译 | 大橙子
校对 | 李柚子
词汇词组 | 西西弗
划线句讲解 | 流木
写作句总结 | 沅沅
免责声明：本文来自网络公开资料，仅供学习交流，其观点和倾向不代表本公众号立场。
