JH_001
综合写作
听力音频：
The Great Lakes are five interconnected bodies of freshwater on the United States-Canada border. Some scientists estimate that if wind turbines (tall towers with rotating blades propelled by the wind) were built in the Great Lakes, the turbines could provide electricity for up to 210 million homes. That and the additional economic and ecological benefits that have been identified have convinced many people to support plans to build turbines in the lakes, several kilometers off their shores. First, bringing wind turbines to the Great Lakes would have great benefit for the local economy. Installing just a few hundred turbines in the lakes would create tens of thousands of jobs in the area. One Canadian province bordering a lake estimates that this would add several billion dollars to its economy over a ten-year period.
Second, the Great Lakes, precisely because they are freshwater lakes, have an advantage over other places where wind turbines are used. Many wind turbines have been built in the ocean near the coastline of some countries, and maintenance costs for these turbines have proved to be high; the salt in ocean water has a corrosive effect on the turbines. In freshwater lakes such as the Great Lakes, corrosion to the turbines is not an issue, so maintenance costs would be kept low.
Third, the wind turbines would help reduce water use. Currently, coal and natural gas power plants use billions of liters of water from the Great Lakes as part of the process by which they produce power. Much of this water cannot be returned to the lakes. In fact, it is estimated that if wind turbines replaced some of those coal and natural gas power plants in producing electricity, up to 9 billion liters of water could be conserved.
Question:Summarize the points made in the lecture, being sure to explain how they respond to the specific concerns expressed in the reading passage.
学生写作：
教授：online shopping对社会整体的影响是好还是坏？
Paul：不好。很多实体店关门。
Kelly：好。消费者省钱。
Doctor Achebe:
More and more, online shopping is becoming the primary way that many people obtain everyday goods. But what are the ramifications for the society in which we live? On the one hand, online shopping has advantages – for example, I can make a purchase without ever leaving my home. However, with fewer people shopping at local shops, in some places, these establishments are having a hard time competing. Do you think that online shopping is, on the whole, affecting society?
Paul:
I think that online shopping has had negative impacts on society. In my city, many local stores have shelves filled with various products that you can find in online stores. This has forced some of them to close down, which not only affects the amount of tax revenue generated in our local community but also impacts the number of job opportunities available to the community members.
Kelly:
It’s unfortunate that some local stores are forced to close down, but that’s the nature of competition. As consumers, we benefit greatly from online shopping due to lower prices. Even if I find a physical store that can compete with online sellers in terms of pricing, I am still likely to make the purchase online because it means I don’t have to spend money on transportation to the store.
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