2020年高考英语真题阅读理解D篇二次开发学案-2024届高三英语一轮复习

2020年全国卷I阅读C篇语法填空 Race walking shares many fitness benefits with running, research shows, while most likely contributing 1.______ fewer injuries. It does, however, have its own problem. Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, 2._______ is about five miles longer than the marathon. But the sport’s rules require that a race walker’s knees stay straight through most of the leg swing and one foot remain in contact with the ground at all times. It’s this strange form 3.______ makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass. Like running, race walking is 4._________(physical) demanding, she says. According to most calculations, race walkers 5._______(move) at a pace of six miles per hour would burn about 800 calories per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour. However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, 6.______ do not leave the ground, create only about 1.4 times their body weight with each step. As a result, she says, some of the injuries 7.__________(associate) with running, such as runner’s knee, are uncommon among race walkers. But the sport’s strange form does place considerable stress 8.______ the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone 9.________(wish) to try race walking should probably first consult a coach or 10.____________(experience) racer to learn proper technique, she says. It takes some practice. 2020年全国卷I阅读D篇语法填空 The connection between people and plants has long been the subject of s