专题07 阅读理解之说明文10篇(第五期)-备战2024年高考英语名校模拟真题速递(江苏专用)

备战2024年高考英语名校模拟真题速递(江苏专用) 第五期 专题07 阅读理解之说明文10篇 （23-24高三下·江苏南京·阶段练习）Consumers increasingly use smartwatches and other wearable devices to measure their heart rates and rhythm during exercise and for overall health monitoring. However, those measurements may be less accurate in people with darker skin tones (肤色), according to a study. The findings are based on a systematic review of 10 previously published studies involving a total of 469 participants. The study is the first to pool data from many studies to specifically examine how skin tones may affect the accuracy of heart data in wearables. After screening 622 scientific papers, the researchers identified 10 studies that reported the heart rate and rhythm data for consumer wearable technology according to a participant’s skin tone. Of those studies, they found that heart rate measurements were significantly less accurate in darker-skinned individuals compared with either lighter-skinned individuals or measurements from proven devices, such as chest strap monitors or electrocardiograms (心电图). One study reported that although there was no difference in heart rate accuracy, wearable devices recorded significantly fewer data points for people with darker skin. Most wearables detect the heart rate and rhythm by aiming a beam of light at the wrist and then detecting how much light is absorbed. Greater light absorption indicates a greater volume of blood flowing through the veins (静脉) under the skin. The study results suggest that this signaling process might not work well in darker skin that contains more melanin (黑色素), which absorbs light. In addition to the rising use of wearables to monitor physical activity and sleep patterns, interest in the use of consumer wearables for medical research and even early detection of heart problems has increased in recent years. The study emphasizes the importance of ensuring that technology meets the needs of diverse populations, especially when it’s intended to improve healt