阅读下面的材料，根据要求写一篇不少于800字的文章。

    2016年7月23日，延庆区北京八达岭野生动物园内发生一起老虎伤人事件，致1死1伤。2017年春节，一在宁波打工者，领着家人新年逛动物园，他给孩子买了票，却自己逃票，不顾警示牌翻墙，被老虎咬死。2017年3月19日，一名男子与多名儿童在北京野生动物园自驾区多次下车，其间，动物园工作人员对其多次提醒、劝阻，才未发生危险。此事发生后，网络上的各种议论一直没有消停。在这些议论中，有对不守规则的反思，有对野生动物园安全问题的审视，有对提高游客素质的呼吁，更有将愤怒指向老虎的。

    对于以上事情，你怎么看？请综合材料内容及含意作文，表明你的态度，阐述你的看法。要求选好角度，确定立意，明确文体，自拟标题；不要脱离材料内容及含意的范围作文，不要套作，不得抄袭。

如图所示，甲，乙，丙是人体内的三种血管，甲中血液流速最快，据此判断，血液在这三种血管中的流动方向是（　　）

阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。

    Everyone has his own way of saying things and his own special expressions. Many everyday American expressions are based ____ colors. Red is a hot color. Americans often use ____to express heat. They may say they are red hot about something unfair. When they are red hot they are very ____(anger) about something. The small hot tasting peppers found in many Mexican foods ____(call) red hots for their color and their spicy taste. Fast loud music is popular with many people. They may say the music is red hot,____ (especial) the kind called Dixieland jazz. Pink is a ____(light) kind of red. People sometimes say they are in the pink ____they are in good health. The expression was first used in America at the beginning of the ____(twenty) century. It probably comes from the fact that many babies are born with a nice pink color ____shows that they are in good health. Blue is a cool color. The traditional blues music in the United States is ____opposite of red hot music. Blues is slow, sad and soulful(深情的). Someone who is blue is very sad.