问题：

[单选,材料题] It can be felt from the description in the 2nd paragraph that the author

根据以下资料，回答下面的题目。
Snowflakes


What does Professor Libbrecht believe to be true?

A . admires the beauty of the snowflakes．
B . dislikes the changing growth history of the snowflakes．
C . has a particular feeling for those flower—like crystals．
D . Iikes to compare snowflakes to the stars in the sky．