一番大事なことは一番最初の文章で書くと教わりましたが、以下の段落はいかがでしょう。僕の大好きな呼吸生理学の教科書からの引用です。第一章、第一段落、第一文が
The lung is for gas exchange
です。しびれますね、こういう文章は。え？しびれないって？そうすか、まあ第一段落をご覧下され。僕はこの書き出しが好きで、暗記できたらいいなあと思ってます（じゃあしろよ！）
The lung is for gas exchange. Its prime function is to allow oxygen to
move from the air into the venous blood and carbon dioxide to move
out. The lung does other jobs too. It metabolizes some
compounds,filters toxic materials from the circulation, and acts as a
reservoir for blood. But its cardinal function is to exchange gas, and
we shall therefore begin at the blood-gas interface where the gas
exchange occurs.
John B. West Respiratory Physiology - the essentials
