关键词：考研英语、单向训练、答案
在考研英语单向训练中，答案如下：
1. 单词辨析：A
2. 阅读理解：D
3. 完形填空：C
4. 翻译：The teacher emphasized the importance of teamwork in the project.
5. 写作：In my opinion, it is crucial to maintain a healthy lifestyle for both physical and mental well-being.
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