5000 B.C.— People began to farm along the Nile River in Egypt.

    2950B.C. — Egypt was first united under MENES.

    2600B.C. — The first pyramid of Egypt, the Pyramid of Djoser, was built.

    2500 B.C. — The great Pyramid of Gina was built.

    2000 B.C. — The Bantu Peoples began to migrate into central and southern Africa.

    1279 B.C. — Rameses II became pharaoh（法老）of Egypt.

    1070 B.C. — The kingdom of Kush gained its independence from Egypt.

    814 B.C. — The city of Carthage was established by the Phoenician Empire.

    715 B.C. — Kush conquered Egypt and ruled it until 662 B.C.

    650 B.C. — Cathage became independent. It grew into one of the most powerful cities on the Mediterranean Sea.

    590 B.C. — The capital of Kush was moved from Napata to Meroe.

    525 B.C. — The Persians conquered Egypt.

    332 B.C. — The Greeks led by Alexander the Great conquered Egypt.

    264 B.C. — Carthage fought in the First Punic War.

    146 B.C. —Cathage was defeated by Rome. Roman forces destroyed the city.

    30 B.C. — Cleopatra VII, the last pharaoh of Egypt, died. Egypt became part of Rome.

计算（1﹣$\frac{1}{2}$﹣$\frac{1}{3}$﹣$\frac{1}{4}$）•（$\frac{1}{2}$+$\frac{1}{3}$+$\frac{1}{4}$+$\frac{1}{5}$）﹣（1﹣$\frac{1}{2}$﹣$\frac{1}{3}$﹣$\frac{1}{4}$﹣$\frac{1}{5}$）•（$\frac{1}{2}$+$\frac{1}{3}$+$\frac{1}{4}$）的结果是（　　）

       先生王斗造门而欲见齐宣王，宣王使谒者①延入。王斗曰：“斗趋见王为好势，王趋见斗为好士，于王何如？”使者复还报。王曰：“先生徐之，寡人请从。”宣王因趋而迎之于门，与入，曰：“寡人奉先君之宗庙，守社稷，闻先生直言正谏不讳。”王斗对曰：“王闻之过。斗生于乱世，事乱君，焉敢直言正谏？”宣王忿然作色，不说。

       有间，王斗曰：“昔先君桓公所好者五，九合诸侯，一匡天下，天子受籍，立为大伯。今王有四焉。”宣王说，曰：“寡人愚陋，守齐国，惟恐失之，焉能有四焉？”王斗曰：“否。先君好马，王亦好马；先君好狗，王亦好狗；先君好酒，王亦好酒；先君好色，王亦好色；先君好士，是王不好士。”宣王曰：“当今之世无士，寡人何好？”王斗曰：“世无骐麟，王驷已备矣。世无东郭逡、卢氏之狗②，王之走狗已具矣。世无毛嫱、西施，王宫已充矣。王亦不好士也，何患无士？”王曰：“寡人忧国爱民，固愿得士以治之。”王斗曰：“王之忧国爱民，不若王爱尺縠④也。”王曰：“何谓也？”王斗曰：“王使人为冠，不使左右便辟而使工者，何也？为能之也。今王治齐，非左右便辟无使也，臣故曰不如爱尺縠也。” 

       宣王谢曰：“寡人有罪国家。”于是举士五人任官，齐国大治。

——选自《战国策》

      【注释】①谒者：负责礼宾的官吏。②东郭逡、卢氏之狗：古代名狗。③便辟：君主左右的宠信小臣。④尺縠（hú）：丝绢，一种丝织品。

在一次郊游中，某同学不慎摔伤，伤口出血，血色暗红，血流较缓．你认为应首先采用哪种措施救护（　　）