sin$\frac{5\mathrm{\pi }}{6}$=（　　）

《台湾风物图卷》长达320米,以生动的笔墨描绘了台湾的自然山川、民俗风土、人文环境等,被誉为宝岛的“清明上河图”。中国国民党主席在2005年访问大陆的“破冰之旅”时,将该图卷的缩小版作为礼物赠送给***领导人。《台湾风物图卷》在海峡两岸交流中扮演了重要角色,它（   ）。

①展现了中华文化多姿多彩的魅力   

②反映了海峡两岸文化同根同源  

③具有与《清明上河图》相同的文化价值和艺术风格   

④是海峡两岸文化从差异走向同一的重要体现

    One day a famous teacher was walking with his student. On the way, they saw a lake. They stopped and the teacher told the student, “I'm thirsty. Get me some water from that lake.”

    Just when the student reached the lake, a cow was walking in the lake. So the water became very dirty. He thought “I can't give the dirty water to my teacher!”

    He came back and told the teacher, “The water is very dirty. We can't drink it.” After about half an hour, the teacher asked the student to get some water again. So he went back to the lake.

    But the lake was still dirty. So he told the teacher the same thing. After some time, the teacher asked him to go back again. But this time, he found the water was clear. The mud in the water came to the bottom. So he got some water.

    The teacher looked at the water and said to him, “You did nothing to make the water clear. You just let it be… Your mind is also like that! When it is bothered, just let it be. Give it some time.”

如图是黄河流域略图，读图完成下列各题。