题型：阅读选择 题类： 难易度：普通
广东省广州市六中珠江中学2024-2025学年九年级英语上学期10月月考英语试题
Race walking shares many fitness benefits with running, research shows, while most likely contributing to 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, which 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 (接触) with the ground at all times. It's this strange form that 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 physically demanding, she says. According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories (卡路里) 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, who 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 associated with running, such as runner's knee, are uncommon among race walkers. But the sport's strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.
Hello! I'm Grace White. {#blank#}1{#/blank#}And White is my last name. I'm a student in No. 5 Middle School. I'm at school now. Look! {#blank#}2{#/blank#}It is yellow. What's on my desk? Three black pens, a blue ruler and an English book. {#blank#}3{#/blank#}She likes blue. Amy is my good friend. She is a nice girl. {#blank#}4{#/blank#}I often call her. {#blank#}5{#/blank#}He likes English very much. And the pens? Of course, they are mine.
A. Her phone number is 334-556. B. This is my desk. C. The ruler is Amy's. D. The English book is Eric's. E. Grace is my first name. |
It is Friday today. Next week Lily is going to hold a party because it's her thirteenth birthday. She has made the invitation(邀请函) ready for the party.
| Welcome to Lily's birthday party! When:5:00pm-7:00pm on October 20 Where: Lily's House at Main Street What to eat: ☑ Fruit, snacks(零食) and drinks ☑ A big birthday cake What to do: ☑ Sing songs ☑ Make a wishing tree ☑ Tell funny jokes and stories Call 478-4366 to tell me if you will come before October 15! |
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