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请看下面这道算术题:如若一个人徒步穿越一片l公里的草地需要500卡的热量的话,那么,穿越一片10公里的草地就需要500卡×10=5000卡的热量。这个命题对吗?单从数学的角
Take a look at the following math: If a person needs 500 calories to walk across a stretch of 1 km of grass then it would take 500 calories x 10 = 5,000 calories to pass through a stretch of 10 km. Is this proposition right? Just from the angle of mathematics