题目原文：
In the past century, the steady growth of the human population and the corresponding increase in agriculture and pesticide use have caused much harm to wildlife in the United States—birds in particular. Unfortunately for birds, these trends are likely to continue, with the result that the number of birds in the United States will necessarily decline.
First, as human populations and settlements continue to expand, birds’ natural habitats will continue to disappear. Forests, wetlands, and grasslands will give way to ever more homes, malls, and offices. As the traditional areas suitable for birds keep decreasing, so will the size of the bird populations that depend on those vanishing habitats.
Second, agricultural activities must increase to keep pace with the growing human population. The growth of agriculture will also result in the further destruction of bird habitats as more and more wilderness areas are converted to agricultural use. As a result, bird populations in rural areas will continue to decline.
Third, as human settlements expand and agriculture increases, the use of chemical pesticides will also increase. Pesticides are poisons designed to kill agricultural and home garden pests, such as insects, but inevitably, pesticides get into the water and into the food chain for birds where they can harm birds. Birds that eat the poisoned insects or drink contaminated water can die as a result, and even if pesticides do not kill birds outright, they can prevent them from reproducing successfully. So pesticides have significantly contributed to declines in bird population, and because there will continue to be a need to control agricultural pests in the future, this decline will continue.
题目音频：
学术写作：
简化大意：
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。
详细题目回忆：
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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