【用戶】SzYau Ho

【年級】高三下

【評論內容】 Scout's pace：20 paces walking and 20 paces running alternatelyScout's pace serves two useful purposes. One is to cover ground without being tired. The other use is to measure distances. With a bit of practice you can develop a steady rate of 1 mile in 12 minutes or 2 kilometers in 15 minutes, not varying 15 seconds either way. To learn this timing method measures a half-mile with a car's speedometer. Scouts pace the distance forward and back until the timing is exacted....