Racewalkingsharesmanyfitnessbenefitswithrunning,researc...

問題詳情：

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 (接觸) 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.

28. Why are race walkers conditioned athletes?

A. They must run long distances.

B. They are qualified for the marathon.

C. They have to follow special rules.

D. They are good at swinging their legs.

29. What advantage does race walking have over running?

A. It’s more popular at the Olympics.

B. It’s less challenging physically.

C. It’s more effective in body building.

D. It’s less likely to cause knee injuries.

30. What is Dr. Norberg’s suggestion for someone trying race walking?

A. Getting experts’ opinions.

B. Having a medical checkup.

C. Hiring an experienced coach.

D. Doing regular exercises.

31. Which word best describes the author’s attitude to race walking?

A. Skeptical.                                                               B. Objective.

C. Tolerant.                                                                 D. Conservative.

【回答】

28. C    29. D    30. A    31. B

這是一篇説明文。短文介紹了競走相比跑步有諸多的優勢，但是之前受過傷的人，要想從事這樣運動要謹慎，最好諮詢專家的建議。

【28題詳解】

細節理解題。根據第二段“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.”可知，但這項運動的規則要求競走者的膝蓋在擺動腿的大部分時間保持伸直，一隻腳始終與地面接觸。由此可知，競走運動員是需要具備某些條件的運動員是因為運動員需要遵守特殊的規則。故選C項。

【29題詳解】

細節理解題。根據最後一段“As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers.”可知，一些與跑步有關的損傷，比如跑步者的膝蓋，在競走者中並不常見。由此可知，競走與跑步相比的優勢是不太可能導致膝蓋受傷。故選D項。

30題詳解】

細節理解題。根據最後一段Dr. Norberg説的話“In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique(事實上，任何想嘗試競走的人都應該首先諮詢教練或有經驗的競走運動員，學習適當的技巧。)”可知，Dr. Norberg建議想嘗試競走的人徵詢專家的建議。故選A項。

【31題詳解】

推理判斷題。根據第一段“Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.”可知，研究表明，競走和跑步一樣有很多健身益處，而且它還很少導致受傷。不過，它也有自己的問題。由此判斷出作者對於競走的態度是客觀的。故選B項。

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