用字母给下列句子排序。
A. I like my kite. It's nice.
B. Can I help you?
C. Thank you.
D. Here you are.
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如图,水平桌面上并排靠近放置两个相同的小木块,当用细管沿水平方向对着木块间的狭缝中间快速吹气时( )