北師大版英語(yǔ)高二下冊(cè)u(píng)nit21humanbiology(編輯修改稿)
2024-12-23 15:05 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 ich reeives everything you digests your food and sends vitamins and minerals into the blood. brain stomach This an beats at regular intervals 100,000 times a day. With each beat, it circulats 80 ml of blood through the body—that’s 8,000 litres of blood per day! It pumps blood into the lungs, where it receives oxygen, Before being pumped around the rest of the body. heart This is a very delicate an. There are two in a body and they have delicate lids which protect them. Light enters and reaches special light sensitive cells. These work like a camera and finally send signals to the brain. eyes These ans absorb oxygen and get rid of carbon dioxide. They are found on either side of the heart. They receive air as a result of breathing and when blood passes through, They give it oxygen. lungs Lesson 1 Super Athletes Which champion athlete do you think can run 100 meters in 8 seconds? Is it possible for you? Maurice Greene 第一位同時(shí)擁有 50米、 60米和 100米 3 項(xiàng)世界記的男選手。 Floyd Landis 2020年環(huán)法自行車賽冠軍 , 第三位獲此殊榮的美國(guó)人 Marion Jones 2020年悉尼奧運(yùn)會(huì) 女子 100米、 200米、4x400米接力 冠軍 Florence Griffith 奧運(yùn)短跑三項(xiàng)金牌得主，同時(shí)也是 100米及 200米短跑的世界紀(jì)錄保持人 Ben Johnson 漢城奧運(yùn)會(huì)以驚人成績(jī)打破男子百米世界紀(jì)錄并奪得金牌 Super Athletes doping n. 服用興奮劑 genetherapy 基因療法 dash n. 短跑
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