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  3. What does Professor Libbrecht believe to be true? Libbrecht is not able to

What does Professor Libbrecht believe to be true? Libbrecht is not able to

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问题 What does Professor Libbrecht believe to be true?
Libbrecht is not able to
选项 A、create snow crystals of different shapes.
B、make crystals that look similar to one another.
C、create snowflakes that are exactly alike.
D、refine his techniques.
答案C
解析 最后一段告诉我们，Libbrecht可以制造不同形状的雪花。他还改进了制造技术，能制造出极为相似的雪花，但还制造不出完全相同的雪花。所以C是正确答案。
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