[a习作temp] Argument47 【同心砥砺组第五次作业】 by iRabbit [复制链接]

iRabbit
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电梯直达

楼主

发表于 2009-2-25 18:45:13 |只看该作者 |倒序浏览

本帖最后由 iRabbit 于 2009-2-25 18:48 编辑

47Scientists studying historical weather patterns havediscovered that in the mid-sixth century, Earth suddenly became significantlycooler. Although few historical records survive from that time, some accountsfound both in Asia and Europe mention a dimming of the sun and extremely coldtemperatures. Either a huge volcanic eruption or a large meteorite collidingwith Earth could have created a large dust cloud throughout Earth's atmospherethat would have been capable of blocking enough sunlight to lower globaltemperatures significantly. A large meteorite collision, however, wouldprobably create a sudden bright flash of light, and no extant historicalrecords of the time mention such a flash. Some surviving Asian historicalrecords of the time, however, mention a loud boom that would be consistent witha volcanic eruption. Therefore, the cooling was probably caused by a volcaniceruption.

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In this argument, the author proposes his discovery that the significant cooler weather in the mid-sixth century was caused by a volcanic eruption at that time. To support his conclusion, the author compare the two possible causes—— a huge volcanic eruption or meteorite collision. He cites that the surviving historical record shows that there was no bright flash oflight but a loud boom at that time. However, careful scrutiny shows that the record cited lends no substantial evidence to support the author’s conclusion.

Firstof all, there is no evidence that volcanic eruption or meteorite collision werethe only two possible explains for the global cooling in mid-sixth century. The author overlooks several alternative possible reasons which may cause thesignificant decrease in temperature. Moreover, before considering whether there happened a volcanic eruption and meteoric collision at that time, the author doesn’t provides evidence of when the earth become significant cooler. If the phenomenon appeared ahead of the possible period of tremendous disaster, it is unconvincing that it is a large dust cloud through the atmosphere generated by the catastrophe concerned.

In the second place, the fact that no records of the time mention a bright flashdoesn’t necessarily indicate there was no meteorite collision at that time. Since there are few historic records survive from that time, it is entirely possiblethat records concerned with the meteorite collision have been lost. There isalso probability that the flash of light generated by the collision occurred inarea without residence or in preliterate communities which were not able totake records. For this reason, without ruling out the possible reasons for the absence of historic records, the author cannot convince me that there was no meteorite collision at that time.

In the third place, the loud boom mentioned by Asian historical records provides no evidence that a volcanic eruption occurred and cause cool temperature. Alarge temblor, a terrible tsunami or even a meteoric collision would also bringabout the loud boom. Without ruling out the possible reasons the author cannot justifiably rely on the mere fact that there was a loud boom mentioned by Asian records of the time to support his conclusion.

Tosum up, the argument is logically flawed and therefore unconvincing as itstands. To better assess the conclusion, the author should substantiate that avolcanic eruption and meteorite collision were the only two possible reason forthe global cooling and provide evidence that the historic records were trustworthy and the loud boom mentioned were associated with the volcaniceruption.

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justdoit!
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沙发

发表于 2009-2-28 10:13:18 |只看该作者

In this argument, the author proposes his discovery that the significant cooler weather in the mid-sixth century was caused by(可以换一种表达啊due to ,attributed to 等等啊） a volcanic eruption at that time. To support his conclusion, the author compare the two possible causes—— a huge volcanic eruption or meteorite collision. He cites that the surviving historical record shows that there was no bright flash oflight but a loud boom at that time. However, careful scrutiny shows that the record cited lends no substantial evidence to support the author’s conclusion.（1.论断太阳昏暗——》cool weather； 2.论断彗星撞击或火山eruption——》太阳昏暗 3.论断无记录flash——》无撞击 4。论断有记录boom——》有eruption 我觉得该清楚点，为下面形成logical做工作）

Firstof all, there is no evidence that volcanic eruption or meteorite collision were the only two possible explains for the global cooling in mid-sixth century. The author overlooks several alternative possible reasons which may cause the significant decrease in temperature. Moreover, before considering whether there happened a volcanic eruption and meteoric collision at that time, the author doesn’t provides evidence of when the earth become significant cooler.（不是说了mid-sixth了？） If the phenomenon appeared ahead of the possible period of tremendous disaster, it is unconvincing that it is a large dust cloud through the atmosphere generated by the catastrophe concerned. （这段看起来太空了，没有内容啊，concrete啊！！）

In the second place, the fact that no records of the time mention a bright flash doesn’t （does not）necessarily indicate there was no meteorite collision at that time. Since there are few historic records survive from that time, it is entirely possible that records concerned with the meteorite collision have been lost. There is also probability that the flash of light generated by the collision occurred in area without residence or in preliterate communities which were not able to take records. For this reason, without ruling out the possible reasons for the absence of historic records, the author cannot convince me that there was no meteorite collision at that time.（错误因果关系）

In the third place, the loud boom mentioned by Asian historical records provides no evidence that a volcanic eruption occurred and cause cool temperature. A large temblor, a terrible tsunami or even a meteoric collision would also bring about the loud boom. Without ruling out the possible reasons the author cannot justifiably rely on the mere fact that there was a loud boom mentioned by Asian records of the time to support his conclusion.

Tosum up, the argument is logically flawed and therefore unconvincing as itstands. To better assess the conclusion, the author should substantiate that avolcanic eruption and meteorite collision were the only two possible reason forthe global cooling and provide evidence that the historic records were trustworthy and the loud boom mentioned were associated with the volcaniceruption.

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