雅思OGtest4听力section3第一题正确答案选择C，对应的解题思路和解题关键句均在本文雅思OGtest4听力section3听力原文题目及答案解析【附MP3音频】中详细介绍，希望本套练习资料可以帮助大家有效的练习和备考。
Question 21
答案：C
定位原文：It basically concluded that 12 billion pounds' worth of food and drink was thrown away each year - all of it ending up in landfill.
解题思路：I was looking at a British study from 2013，提示Robert将要谈及对于2013年英国研究的结论或观点，定位到It basically concluded that 12 billion pounds' worth of food and drink was thrown away each year - all of it ending up in landfill。make point about是对basically concluded的同义转述;C选项是正确的，liquid waste是对food was thrown away in landfill的同义转述，solid waste是对drink was thrown away in landfill的同义转述。landfill，垃圾堆。 根据Over eight million tons - and that wasn't including packaging，可排除A选项;根据 they were only looking at what households threw away, so there's no information about restaurants and the catering industry，可排除B选项。
Question 22
答案： A
定位原文：Exactly. We could really cut down on carbon emissions if less food was supplied in the first place
解题思路：In the other European reports I’ve read - there's one thing they have in common when they talk about carbon dioxide emissions，提示下文即将讨论对话者对于食品浪费报告的共同观点，定位到Exactly. We could really … in the first place。注意exactly在上下文的语气意义，exactly作语气词的意思是“(答语，表示赞同或强调正确)一点不错，正是如此，完全正确”，即提示这个词后说的这句话表明了二人共同的观点。A选项中的food production是对food was supplied的同义转述，故正确。
Question 23
答案：B
定位原文：These days they all seem to be focusing on where your meat, fruit and vegetables are sourced from.
解题思路：People making television programmes，提示下文即将讨论电视节目重点都讲些什么。定位到These days they all seem to be focusing on where your meat, fruit and vegetables are sourced from。B选项的origin是对划线句的同义转述，故正确。origin和source是同义词，都有“源头”的意思，source作动词的意思是“从…获得”。
Question 24
答案：C
定位原文：… is that in a recession governments should be encouraging business to find ways to cut costs.
解题思路：What concerns me above all else，提示下文Anna即将具体说出她认为最重要的点，定位到is that in a recession governments should be encouraging business to find ways to cut costs。C选项中的the economic effect是对这句话进行的同义转述，cut cost，削减成本。the most significant 是对above all的同义转述，significant，重要的，above all，首要的是，最重要的是。
Question 25
答案：A
定位原文：How about we give the other students a set of questions to answer - about what they suspect they waste every day?
解题思路：Now, how do you want to begin the presentation? 提示下文即将讨论两个人都同意的演讲开场方式。定位到How about we give the other students a set of questions to answer - about what they suspect they waste every day? 注意虽然这句话是how about引起的建议性问句，但是在这句话后对话者用I’m fine with that (我觉得没问题)给予了肯定的回答。A选项是对定位句的概括，hand out(发放)是对give的同义转述，a questionnaire(调查问卷)是对a set of questions to answer的同义转述。
Question 26
答案：G
定位原文：The other good thing about the patches is that apparently they'll be cheap to manufacture.
解题思路：where they’ve invented tiny edible patches to stick on fresh foods… 提示下文即将讨论食用田的优势。定位到The other good thing about the patches is that apparently they'll be cheap to manufacture。G选项very little cost是对cheap的同义转述，故正确。manufacture, 加工，制造，生产。
Question 27
答案：A
定位原文：That's got to be a quicker way to check for ripeness than taking each box off the shelf and opening it.
解题思路：They've developed these sensors that can detect…then supermarkets can scan the sensors with a portable device to see how ripe the fruit inside is，提示下文即将具体阐述ripeness sensor的优势，定位到That's got to be a quicker way to check for ripeness than taking each box off the shelf and opening it，A选项的save time是对这句话的概括，故正确。scan，扫描;portable device，可携带设备;ripe，成熟的。
Question 28
答案：D
定位原文：That'll increase profits for them eventually.
解题思路：Their waste tracking technology means that caterers can see how much food is being wasted and why，提示下文即将讨论垃圾追踪技术的优势。定位到That'll increase profits for them eventually。D选项的make money是对increase profits的同义转述，故正确。track，跟踪。
Question 29
答案：C
定位原文：In the long run, that'll definitely benefit poorer families in the neighbourhood.
解题思路：They’ve produced this smartphone application that allows restaurants to send donation alerts to food charities，提示下文将讨论手机应用的优势。定位到In the long run, that'll definitely benefit poorer families in the neighbourhood。C选项的local communities是对families in the neighbourhood的同义转述。neighbourhood，居住区，周边地区;community，社区;in the long run，从长远看来。
Question 30
答案：E
定位原文：I guess if we all start composting, we'd be doing something positive about the problem of food waste ourselves, rather than relying on the government to sort it out.
解题思路：So you can't put any food waste into your rubbish bins, just the compost bin，提示下文即将论食品垃圾堆肥的优势。定位到I guess if we all start … sort it out。E选项的personal responsibility是对doing something positive about the problem的同义转述， 故正确。rather than，而不是;rely on，依靠;sort sth out，整理，解决，分类。