使用[[Google Doc]] 做修改过程的记录,统计修改率。 # TPO53 | s | | | | ------------------------------- | --- | --- | | discourage, obesity rate | | | | fair,medical cost | | | | public walfare, stadiums, parks | | | For instance, higher taxes would lead smoker to buy cheaper and low-quality cigarettes. Such cigarettes typically contain more harmful substances than better quality cigarettes, and present greater health risks. imagine how consumers react to higher taxes on unhealthy food. they might continue to bug unhealthy food and have less money left to buy healthy food. Second, It seems fair for people who indulge in unhealthy food to pay for consequence of their behaviors through higher taxes. But some people would argue that this taxes are unfair, because it doesn't take the income into account. If high earning people and low earning people are addicted to cigarettes and each smokes one pack of cigarettes per day, paying the tax would be a greater expense for lower earning people relative to his or her income. Finally, the fact that the government can use the taxes for various projects has a downside. This income represents millions and millions of dollars, the government becomes dependent on it and doesn't want to lose it. In consequence, the government might not <u>be forceful enough</u> to pursue and implement policies to limit unhealthy food. They don't want to take radical measures, like not allowing smoking in all outdoor areas and banning smoking in all outdoor areas public or private, because they don't want to lose this income. --- # TPO 52 Astroid colonization is not a practical idea. Each of the ideas in the reading has a serious downside. While low g would make landing and taking off relatively easy, low g has certain risks. In a low g environment, people start losing muscle mass, and the bone density becomes lower. Imagine the health problems that long term colonists would experience on astroid. (祈使句) The availability of valuable metals might make colony on astroid seem like a profitable idea, but that's not the whole picture. The costs of supporting the colony and transporting the metals would be high and reduce the profits. There's no guarantee that the price for which you can sell the metals would remain the same. If precious metals are mined in large quantities, it would increase the supply and lower the price. Astroid orbits, the path on which the astroid travel through the space, are unusual. Some orbital paths come close to earth but move away from earth. Even some astroids get close to earth, making it easy for colonists to reach, but it does not stay close to earth. Getting back from a astroid <u>that travels that far</u> can be a challenge. # TPO 51 <u>beliefs</u> are base on misunder First, we should not assume that the elephant can be aware of their death soon just because they break away from <u>herds</u>. There's a practical reason why elephants leave their herd. Their teeth become <u>worn down</u> and they have difficulty chewing. so elderly elephants wander off to look for soft leaves to eat. And soft vegetation is always found near water. <u>That's why</u> many old elephants graze near water and eventually die there in areas <u>we've come to</u>(故而) call elephants' graveyards. Second, If you watched elephant trainers, you would notice they stroking e's ears to move xx painted brush. E's ears are sensitive. And touching them in certain ways can be used to train elephant to learn some patterns of paintbrush strokes. and they encourage elephants to repeat the patterns by touching these areas. But, they actually don't know the lines are supposed to represent flowers or animals. Being <u>cautious</u> about unfamiliar animals is a natural instinct. Living in the environment <u>that</u>where mice are common, like a zoo, the elephant would't be fear. If they know mice aren't thread, they wouldn't mind them.