请开始答题：请从所给的四个选择项中，选择最适合的一个，使之呈现一定的规律性：（　　）。

A、<img width="25" height="30" src="http://admintk.100xuexi.com/UpLoadImage/2016-08-23/fb6dd2af-68ad-451d-8c79-83503a0eaad3.png" />

B、<img width="30" height="29" src="http://admintk.100xuexi.com/UpLoadImage/2016-08-23/3bbc3eff-d759-47fe-9700-d77c31eb9aa7.png" />

C、<img width="29" height="32" src="http://admintk.100xuexi.com/UpLoadImage/2016-08-23/57a561b0-52db-41f5-9043-5d40654d687a.png" />

D、<img width="34" height="31" src="http://admintk.100xuexi.com/UpLoadImage/2016-08-23/6c354033-f9d5-4c23-b65f-c30324432528.png" />