argument : 'The following appeared in a letter to an editor. "In many countries, wood is the primary fuel used for heating and cooking, but wood smoke can cause respiratory and eye problems, and extensive use of wood causes deforestation, a major environmental problem. In contrast, charcoal, made by partially burning wood in a controlled process, is a fuel that creates less smoke than wood does. Moreover, although charcoal costs slightly more than wood, less charcoal is needed to produce the same amount of heat. Therefore, people who use wood as their primary fuel can, without experiencing economic hardship, switch to charcoal and can thereby improve their health and preserve the environment." '在许多的国家中,木材是用於取暖烧饭的主要燃料, 然而烧木材产生的烟会引起呼吸及眼睛方面的疾病, 并且,大量使用木材会导致滥垦。相对的,活性碳, 一种在控管过程下部份燃烧木材而成的燃料,可产生较少的烟。 虽然,使用活性碳的花费较木材多, 但使用较少量的活性碳就可以生成等量的热,因此 ,没有经济问题的人们可转为使用活性碳以保障健康及保护环境。 issue 38"The study of history places too much emphasis on individuals. The most significant events and trends in history were made possible not by the famous few, but by groups of people whose identities have long been forgotten." 38、对历史的研究把太多的重点放在对某些个人上。 而历史上一些重大的事件和发展趋势不是由个别名人决定的， 而可能是由那些已经被人们淡忘的人制造的。 --

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