2010.2.21托福機(jī)經(jīng)寫作部分
Independent ： Should all school teachers be required to attend courses every 5 years to update their knowledge?
Integrate: Iron fertilization
Reading:
1, not efficient, in experiment, only few carbon dioxide could be absorbed.
2, produce toxic chemical materials which will harm the local fish industry. Human beings will be harmed also if they eat those toxic fishes.
3, cause bad impact to ocean biology system. damage ocean's bio-system balance.
Lecture:
1, experiment is too short, only for 1 month. Actually, the 2nd and third month, absorption of carbon dioxide will gradually increase. most of CO2 are consumed in the last month which can not be observed in the short experiment.
2, only limited area will generate these toxic materials. stop to use this method in those area then.
3, global warming's risk is greater than regional ocean's bio-system risk. So should concern more about global warming, ignore ocean's biology system damage.
第一段的關(guān)鍵詞的確是ineffective，說(shuō)相關(guān)實(shí)驗(yàn)也少。而在聽力里面反駁的時(shí)候說(shuō)的是那個(gè)phytoplankton我記得貌似是個(gè)什么浮游植物，這個(gè)東西can live 2到3個(gè)月。而大多數(shù)實(shí)驗(yàn)只觀察了一個(gè)月，所以老師認(rèn)為如果多觀察，等到一個(gè)月后就會(huì)很明顯的效果了。
第二個(gè)關(guān)鍵詞就是說(shuō)toxin這個(gè)問(wèn)題。閱讀說(shuō)害魚還會(huì)hurt吃魚的人(原文hurt)。而聽力說(shuō)的是你只要不fertilize with iron就OK了，至少我聽見是這樣子的，等你把這些東西種好了不需要了就不要用鐵了就沒(méi)毒了。
第三段是說(shuō)破壞生態(tài)平衡，閱讀說(shuō)的是你不知道你用這個(gè)東西會(huì)給ocean的生物帶來(lái)什么，他們會(huì)相互影響最后影響整個(gè)海洋的生態(tài)平衡。而聽力說(shuō)if you don't take this risk就會(huì)有g(shù)reat risk，也就是全球變暖氣候變化，聽力說(shuō)這個(gè)影響更大，而且也會(huì)給整個(gè)海洋生態(tài)系統(tǒng)帶來(lái)更大的威脅和破壞。
獨(dú)立寫作
Do you agree or disagree with the following statement?
All school teachers should be required to take courses every five years to update their knowledge?
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