关键词：考研英语，真题，题目
在考研英语的征途上，真题题目如同指路明灯，引领考生穿越词汇的迷宫，跨越语法的险滩。以下是一道典型的考研英语真题题目：
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题目：阅读以下短文，然后回答问题。
In recent years, the increasing popularity of online shopping has led to a significant rise in the number of parcels delivered to households. This has brought both convenience and challenges to our daily lives.
Convenience is the most apparent benefit of online shopping. With just a few clicks, customers can purchase goods from the comfort of their homes. They no longer need to spend time and energy visiting physical stores. Moreover, online shopping offers a wider variety of products and competitive prices, making it an attractive option for many consumers.
However, the convenience of online shopping also brings challenges. One of the most pressing issues is the environmental impact of the packaging and transportation of parcels. Each year, millions of tons of packaging materials are produced, much of which ends up in landfills. Additionally, the logistics of delivering packages to countless addresses can lead to traffic congestion and increased carbon emissions.
To address these challenges, some companies have started to adopt eco-friendly packaging solutions and optimize their delivery routes. They also encourage customers to reuse packaging materials and choose sustainable shipping options. These efforts are gradually reducing the environmental footprint of online shopping.
Despite these positive developments, it is clear that the convenience of online shopping comes at a cost. We, as consumers, need to be more aware of the environmental impact of our purchases and make more sustainable choices.
问题：What are the main benefits and challenges of online shopping mentioned in the passage?
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