关键词：考研英语，训练，答案
一、词汇训练答案
1. ①. (A) ②. (C) ③. (D) ④. (B) ⑤. (D)
二、阅读理解训练答案
1. A 2. C 3. B 4. D 5. A
三、完形填空训练答案
1. C 2. B 3. D 4. A 5. C
四、翻译训练答案
1. This book is written for students who are preparing for the IELTS exam.
2. The company has announced that it will increase its investment in renewable energy.
五、写作训练答案
（以下为作文示例，可根据具体题目进行调整）
考研英语作文：
Nowadays, the Internet has become an integral part of our lives. It brings us both convenience and challenges. In my opinion, the advantages of the Internet outweigh its disadvantages.
Firstly, the Internet provides us with a wealth of information. We can easily access news, articles, and books online, which saves us a lot of time and effort. Secondly, the Internet enables us to communicate with people from all over the world. We can make friends, share experiences, and even collaborate on projects. Lastly, the Internet has greatly facilitated our daily lives. We can shop online, book tickets, and even conduct business transactions.
However, the Internet also brings some challenges. For example, it can be a source of distraction and addiction. Moreover, some people may misuse the Internet to spread false information or engage in cyberbullying.
In conclusion, the Internet is a double-edged sword. We should make full use of its advantages while being aware of its potential risks.
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