从所给四个选项中，选择最合适的一个填入问号处，使之呈现一定规律性（　）。<img src="https://www.bestkids.net/android-static/%E5%85%AC%E5%8A%A1%E5%91%98/6357438989290663961816590.png" width="213" height="206" ><br><img src="https://www.bestkids.net/android-static/%E5%85%AC%E5%8A%A1%E5%91%98/6357438989967705153442196.png" width="66" height="92" ><br><img src="https://www.bestkids.net/android-static/%E5%85%AC%E5%8A%A1%E5%91%98/6357438990810106634244575.png" width="66" height="92" ><br><img src="https://www.bestkids.net/android-static/%E5%85%AC%E5%8A%A1%E5%91%98/6357438992332669309214071.png" width="66" height="96" ><br><img src="https://www.bestkids.net/android-static/%E5%85%AC%E5%8A%A1%E5%91%98/6357438993234350892832549.png" width="69" height="93" >