读图判断，其所在的民族是（   ）

【甲】《陈太丘与友期行》

    陈太丘与友期行，期日中。过中不至，太丘舍去，去后乃至。元方时年七岁，门外戏。客问元方：“尊君在不？”答曰：“待君久不至，已去。”友人便怒曰：“非人哉!与人期行，相委而去。”元方曰：“君与家君期日中。日中不至，则是无信;对子骂父，则是无礼。”友人惭，下车引之。元方入门不顾。

【乙】《狼》

    一屠晚归，担中肉尽，止有剩骨。途中两狼，缀行甚远。

    屠惧，投以骨。一狼得骨止，一狼仍从。复投之，后狼止而前狼又至。骨已尽矣，而两狼之并驱如故。

    屠大窘，恐前后受其敌。顾野有麦场，场主积薪其中，苫蔽成丘。屠乃奔倚其下，弛担持刀。狼不敢前，眈眈相向。

    少时，一狼径去，其一犬坐于前。久之，目似瞑，意暇甚。屠暴起，以刀劈狼首，又数刀毙之。方欲行，转视积薪后，一狼洞其中，意将隧入以攻其后也。身已半入，止露尻尾。屠自后断其股，亦毙之。乃悟前狼假寐，盖以诱敌。

    狼亦黠矣，而顷刻两毙，禽兽之变诈几何哉？止增笑耳。

$\sqrt{2+\frac{2}{3}}$ =2 $\sqrt{\frac{2}{3}}$ ； $\sqrt{3+\frac{3}{8}}$ =3 $\sqrt{\frac{3}{8}}$ ； $\sqrt{4+\frac{4}{15}}$ =4 $\sqrt{\frac{4}{15}}$ ； $\sqrt{5+\frac{5}{24}}$ =5 $\sqrt{\frac{5}{24}}$

你能看出其中的规律吗？用字母表示这一规律，并给出证明．

A

    Once upon a time, there lived a teacher in a small town. He often taught his students in special ways. Once he sent four of his students to go to a small farm to see apple trees in different seasons. The first student went in winter, the second in spring, the third in summer, and the last in autumn.

    After the four students came back, the teacher called them together. They described their feelings to the teacher. The first student said that there were no leaves on the trees. It made him very disappointed(失望的). The second student said his eyes were full of light green. It made him feel hopeful. The third one disagreed. "What are you talking about? How pretty the trees were! The sweet smell(气味) of the beautiful flowers is everywhere." The last one shook his head. He only saw a lot of apples on the beautiful trees.

    The teacher smiled and told his students none of them were wrong. They each just saw one season. He continued, "The trees are not the same in different seasons. You can't judge(评价) a tree by only one season."

    Everything has different sides in our life. Don't hurry to make a conclusion(结论) before seeing the whole of it.

阅读短文，判断下列句子正误。