随着近日强冷空气影响，杭州南山路两旁行道树落叶纷飞，中国美院门口出现了一座由落叶堆成的“金字塔”，引得市民争相合影留念．秋天植物落叶体现了生物（  ）

    An official media outlet has, for the first time, published a cartoon of President Xi Jinping, with graphic details of his engagements over the past months. Cartoons can make politicians seem more friendly, says Tao Duanfang in an article for The Beijing News.

    Cartoons can leave a deep impression about a character in the minds of readers. Presidential campaign teams in countries like the US, Canada and Japan have a tradition of crafting products in the shape of politicians' caricatures.

    Tao points out that caricatures of politicians have become part of pop culture in many countries, with their purposes ranging from publicity to commercial use. Cartoons and caricatures can be used to criticize or ridicule political leaders, too. Besides, they can also help politicians introduce their political views.

    Tao says that cartoons and caricatures can bring politicians closer to the people and demonstrate the spirit of an inclusive and lively political climate, which is conducive (有利于) to social progress.

登斯楼也，则有_______，_______，_______，其喜洋洋者矣。