4. 自然資源怎樣保護?
母題：Fossil fuels, such as coal, oil, natural gas, are used in many countries. But in some countries, the use of alternative sources of energy, including wind and solar power, are encouraged. Is this trend a positive or a negative development? (090530)、
提示：這道題目問的是新能源alternative energy的優(yōu)缺點。優(yōu)點：取之不盡用之不竭inexhaustible，更環(huán)保environmentally-friendly, 缺點：核能 nuclear power會引發(fā)安全事故，水能hydropower會破壞生態(tài)環(huán)境upset the ecological balance, 太陽能solar power 成本太高，風能wind power會產(chǎn)生次聲波污染infrasonic wave.
子題：淡水資源怎樣保護?是什么原因?qū)е铝耸?、森林和淡水資源的緊張，怎樣解決?解決環(huán)境問題的最佳方法是提高石油的價格嗎?(此題已被劍8收錄)
5. 交通工具
母題：One long-distance flight consumes fuel which a car uses in several years’ time, but they cause the same amount of pollution. So some people think that we should discourage non-essential flights, such as tourist travel, rather than to limit the use of cars. To what extent do you agree or disagree? (060325, 080405)
提示：這道題目是經(jīng)典老題，多次在雅思考試中出現(xiàn)。題目中的理由有明顯的邏輯漏洞，因為飛機承載的乘客數(shù)量和行駛的距離要遠大于汽車，因此先駁斥理由，再講飛機被禁止的后果(旅游業(yè)，物流業(yè)將會遭到重創(chuàng))就可以了。
子題：汽車會帶來哪些問題?廉價航空是否應當被推廣?
6. 食品安全
母題：Some people support the developments in agriculture such as factory farming and creations of new types of fruits and vegetables, while others oppose this view. Discuss both views and give your opinion. (080712)