我家少爺畫地為牢，很怕寫作文，總說自己寫得不好。

上次被我逼了去參加學校作文比賽的選拔。考試過程是在45分鍾內，每人寫一篇作文，題目是＂寫最近一次讓你流淚或者快要流淚的事情＂。少爺回來說，他花了很長的時間考慮寫什麽，等他好不容易想好了，剛剛寫了個開頭，交卷時間就到了。我說，沒關係，你沒經驗，下次不要花這麽長的時間醞釀，快點開寫。再問，那你到底寫了什麽讓你傷心的事情？人家回答說，我寫我的狗死了。什麽？？？孩子啊，我們家從來沒有養過狗，你，你這不是胡編亂造嗎？

少爺氣憤地說，媽媽，你不覺得我的生活太平淡了嗎？我實在沒有什麽有戲劇性的故事可以寫啊。

上個周末，少爺哼哼嘰嘰不肯去中文學校。我說好吧，不過你得在家寫一篇作文。他問寫什麽，我說寫寫我們的春假吧。少爺麵露痛苦，那有什麽可寫的。問，我可不可以寫我感興趣的內容，比如telomerose？我說可以，於是他就寫了這麽一篇。

Telomerase: The Fountain Of Youth

Since the beginning of time, humans have yearned to subvert the natural course of time, with stories such as Ponce de Leon’s Fountain of Youth, which would grant eternal life to those who bathed in it’s waters. There are other stories of substances that would bring immortality, such as an Elixir of Life, and substances like jade and cinnabar. We still can’t promise eternal life. But with the miracle of modern science, we now have a substance, telomerase, that can come close.

Telomerase is a ribonucleoprotein, or, more simply, an enzyme. It is a biocatalyst that affects metabolic reactions in the body. Like all enzymes, telomerase has a purpose. It’s purpose is to regenerate telomeres. But what do telomeres do? Every day, cells in the body are created and destroyed. This happens through processes called meiosis and mitosis, where a cell splits into two new cells. The chromosomes are replicated into each new cell. At the end of the chromosomes are telomeres. They act as caps, preventing the chromosomes from being damaged or flawed. But when the human body runs out of telomeres and telomerase to reproduce telomeres, organs fall into disrepair and shrivel, other organs start to fail, the body becomes infertile, and eventually dies. This is known as aging.

With a surplus of telomerase, aging could theoretically slow, stop, or even reverse. In 1961, Leonard Hayflick first noticed that a cell can only reproduce between 40 and 60 times. This is known as the Hayflick Limit. Research in telomere shortening started in 1973 by a Soviet biologist, Alexey Olovnikov, who connected telomeres and aging. In 1984, Carol Greider and Elizabeth Blackburn discovered telomerase, along with Jack Szostak. However, scientists quickly realized that aging was not a direct process, but had many deciding factors. Telomerase was not as crucial as they had thought.

Since the discovery of telomerase, many experiments concerning it have been conducted. Mice born without telomerase quickly aged and gained age related disabilities. However, when supplied with telomerase, they miraculously became healthy again. Even if telomerase therapy was used on humans, many are worried that telomerase could excite tumors. In fact, telomerase is what makes cancer so deadly. Others argue that telomerase would eliminate DNA damage, stopping cancer altogether. With our limited technology, we are yet to find out who’s right.

Even though telomerase is not reliable enough to test on humans, we can lengthen telomeres with simple activities such as exercise. Just taking a walk every now and then can increase a person’s lifespan, and make them healthier to boot. Although miracle substances like a magic fountain may never exist, the mysteries of telomerase are sure to be unraveled soon.

怎樣教初中生寫作文我不太懂，對他寫的具體內容也不詳，貼上來求建議求引玉。

以前的：便秘作文