在撰写考研英语作文时，为了提升文章的档次和表达效果，以下是一些高级词汇的替换建议：
1. instead of —— instead
例如：Instead of relying on memory, one should always verify the facts.
2. important —— significant
例如：The significance of this research cannot be overstated.
3. good —— excellent
例如：His performance was excellent throughout the competition.
4. interesting —— fascinating
例如：The story was so fascinating that I couldn't put it down.
5. bad —— terrible
例如：The weather was terrible that day.
6. happy —— delighted
例如：She was delighted to receive the invitation.
7. sad —— sorrowful
例如：The news of her loss brought sorrow to many.
8. easy —— simple
例如：The task is simple enough to be completed in a few hours.
9. difficult —— challenging
例如：This is a challenging problem that requires creative thinking.
10. helpful —— beneficial
例如：The advice was beneficial and helped me make the right decision.
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