# Recycling tyres in Australia - 科目：雅思听力真题（Part 4） - 考频：中频 - 最近考试：2017.10.21/2013.3.23/2011.1.27 - 题目数：10 - 来源页：https://www.yaquan.site/paper/a90283b3-c95a-44db-b994-2f05bffbb8fd（在线机考练习与音频请访问该页面） - 数据更新：2026-10-29 ## 题目原文 00:00:00,240 Part four. 00:00:02,080 You will hear a man giving a lecture on his tire recycling company to environmental science students. First, you have some time to look at questions thirty-one to forty. 00:01:06,240 Now listen carefully and answer questions thirty-one to forty. 00:01:14,280 Good afternoon. I'm the managing director of Molectra Technologies, and we're involved in recycling tires from vehicles such as cars and trucks. 00:01:24,420 This might not sound new or exciting, but the method we use is quite radical compared to traditional tire recycling methods. 00:01:33,520 We strongly believe that the business of recycling tires is crucial as amazingly, every month in Australia alone, the number of old tires that are discarded exceeds one point five million. And when you look at the figure globally, it is a staggering one point two billion each year. 00:01:55,520 For decades, various recycling methods have been trialed with varying degrees of success. In some cases, the solution was as bad as the problem. Incinerating tires, for example, generates toxic fumes which are harmful to the environment. 00:02:12,640 Breaking up whole tires is energy intensive and produces a contaminated product with very little value. As a result, there was little incentive to get into the business because there was no profit in it. 00:02:25,080 And yet, a tire is made up of so many valuable components, and it is for this reason that we started trying out new recycling methods. 00:02:35,280 In the end, our factory came up with a much improved system for recycling old tires. The Molectra process is different for a number of reasons. Firstly, it is a lot cheaper to run because our machines are much more compact in comparison to traditional systems. This in turn reduces energy consumption. 00:02:56,960 The wear and tear on the shredding equipment, which cuts up the tires, is also reduced as the tires fed through them have already been softened. Costs are reduced by over thirty percent using our system. And significantly, our machines can handle a tire of any size, from the smallest bicycle or wheelbarrow right up to the largest earth-moving truck. Most other processes can only handle car tires. Our technology has proven to work, and we have won many awards, including the Australian Museum's Eureka Award, and last year on a national TV program, we were chosen as the invention of the year. 00:03:40,520 Winning that certainly opened many doors for us, with interest coming from twenty-seven countries around the world, including the United States and China. 00:03:51,620 To cope with the demand, we will soon have ten more factories which will operate twenty-four hours a day just to stabilize the current stockpile. We are passionate about taking this process further, and so we have chosen to dedicate five percent of every dollar we make to research. In this way, we can ensure we are always the best in the business. 00:04:20,280 So let's look at the process we use, what we extract from the tire in each stage of the process, and the uses that those materials can be put to. 00:04:31,420 The first step of the process mechanically extracts the steel wires from the rim of the tire. This high-quality wire can be cut into small pellets suitable for sandblasting shots. 00:04:43,360 Next, after the tires have been sliced into a number of segments depending on tire diameter, they are chemically treated. 00:04:51,550 This chemical treatment is essential as it removes dirt from the rubber prior to the rest of the process. 00:04:58,410 The cleaning process also softens the tires, making them easier to chop up. In the next stage, the fiber cords contained in the tire segments are separated from the rubber using rollers. The fibers, which can include nylon and rayon, can be used as a reinforcement for concrete, or they can be used to form plastic panels. 00:05:21,760 Then the rubber is cut up into very small pieces known as crumb rubber. For a tire weighing ten kilograms, Molectra can recover seven and a half kilograms of crumb rubber that can be used to manufacture a range of rubber products, such as asphalt used in road making. 00:05:40,740 It is also used as insulation in buildings or something simple like tiles for the floor. 00:05:47,640 Alternatively, any or all of this crumb rubber can continue through to the final stage. 00:05:54,980 This final stage involves our patented Molectra vac machine, which uses industrial microwave energy. 00:06:03,960 This changes the remaining rubber into hydrocarbon, which can be used to make three different products. 00:06:10,740 We can cheaply produce activated carbon, which is usually quite expensive to make from new materials. It's used for treating water as well as being an integral part of air filters. 00:06:23,440 Secondly, as the carbon produced is very pure, in fact it's over ninety-seven point four percent pure, we can crush it to form something called carbon black, which is used in the manufacture of batteries and also ink. 00:06:40,140 Our process is very flexible, and we can alter the quantity of each of the three products depending on demand. 00:06:47,640 Finally, we can even use the hydrocarbon to make oil, and we use this to generate electricity to power our own machines. It certainly helps to keep the costs down. 00:06:59,860 And that's just about it. So if there are any questions 00:07:06,500 That is the end of part four. You now have one minute to check your answers to part four. ## 题目与答案 ### 31. Recycling Tyres in Australia Background · More than 1.5 million tyres are dumped in Australia per 31_____ . Recycling Tyres in Australia Background · More than 1.5 million tyres are dumped in Australia per 31_____ . **答案**：month 原文定位：every month in Australia alone, the number of old tires that are discarded exceeds one point five million 同义替换：「dumped」↔「discarded」；「per」↔「every」 ### 32. · Previous recycling attempts failed because: ·There were pollution problems-smoke from burning ·Recycling companies didn`t make any 32_____ . · Previous recycling attempts failed because: ·There were pollution problems-smoke from burning ·Recycling companies didn`t make any 32_____ . **答案**：profit 原文定位：As a result, there was little incentive to get into the business because there was no profit in it 同义替换：「didn't make any」↔「there was no」；「attempts failed」↔「little incentive to get into」 ### 33. Advantages of Molectra`s process · More economical because smaller machines are used. · Less maintenance - tyres softened before shredding. · No limit on the 33_____ of tires recycled. Advantages of Molectra`s process · More economical because smaller machines are used. · Less maintenance - tyres softened before shredding. · No limit on the 33_____ of tires recycled. **答案**：size 原文定位：And significantly, our machines can handle a tire of any size, from the smallest bicycle or wheelbarrow right up to the largest earth-moving truck 同义替换：「No limit on」↔「any」 ### 34. The future · Ten more factories are being built. · Plans to spend 5% of income each year on 34_____ . The future · Ten more factories are being built. · Plans to spend 5% of income each year on 34_____ . **答案**：research 原文定位：we have chosen to dedicate five percent of every dollar we make to research 同义替换：「income」↔「every dollar we make」；「spend」↔「dedicate」 ### 35. Recycling Tyres Process Possible Uses Removal of steel 35_____ from tyre rim → Steel pellets used in industry ↓ Recycling Tyres Process Possible Uses Removal of steel 35_____ from tyre rim → Steel pellets used in industry ↓ **答案**：wires 原文定位：The first step of the process mechanically extracts the steel wires from the rim of the tire 同义替换：「Removal」↔「extracts」 ### 36. Chemicals applied to get rid of 36_____ and soften rubber ↓ Chemicals applied to get rid of 36_____ and soften rubber ↓ **答案**：dirt 原文定位：This chemical treatment is essential as it removes dirt from the rubber prior to the rest of the process 同义替换：「get rid of」↔「removes」；「applied」↔「treatment」 ### 37. Fibres, e.g. nylon, removed → Strengthening concrete Sheet made of 37_____ . ↓ Fibres, e.g. nylon, removed → Strengthening concrete Sheet made of 37_____ . ↓ **答案**：plastic 原文定位：The fibers;can be used as a reinforcement for concrete, or they can be used to form plastic panels 同义替换：「Sheet」↔「panels」；「removed」↔「separated from」 ### 38. Tyres cut up into crumb rubber → - Asphalt for roads - Insulation ↓ - 38_____ tiles Tyres cut up into crumb rubber → - Asphalt for roads - Insulation ↓ - 38_____ tiles **答案**：floor 原文定位：It is also used as insulation in buildings or something simple like tiles for the floor ### 39. The MolectraVac machine microwaves rubber into hydrocarbon → i) Used for activated carbon -39_____ treatment - Air filtration The MolectraVac machine microwaves rubber into hydrocarbon → i) Used for activated carbon -39_____ treatment - Air filtration **答案**：water 原文定位：It's used for treating water as well as being an integral part of air filters ### 40. ii) Used for carbon black - batteries - 40_____ ii) Used for carbon black - batteries - 40_____ **答案**：ink 原文定位：carbon black, which is used in the manufacture of batteries and also ink --- 以上内容由鸭圈雅思真题库（www.yaquan.site）提供，收录近期雅思考试真题回忆，支持在线机考模式免费练习。