read and answer 2

a. Read the following article carefully.

Why Does Hair Turn Gray?

Have you ever watched someone trying to cover up gray hair by dyeing it? Or maybe you wonder why you grandad has a full head of silver hair when in old pictures it used to be dark brown? Getting gray, silver, or white hair is a natural part of growing older, and here’s why.

Each hair on our heads is made up two parts: a shaft ---- the colored part we see growing out of our head and a root ---- the bottom part, which keeps the hair anchored under the scalp.

The root of every strand of hair is  surrounded by a tube of tissue under the skin which is called the hair follicle. Each hair follicle contains a certain number of pigment cells. These pigment cells continuously produce a chemical called melanin which gives the growing shaft of hair its color of brown, blonde, red, and anything in between. The dark or light color of someone’s hair depends on how much melanin each hair contains.
As we get older,the pigment cells in our hair follicle gradually die. When there are
fewer pigment cells in a hair follicle, the strand of hair will no longer contain as much melanin and will become a more transparent color --- like gray, silver or white --- as it grows. As people continue to get older, fewer pigment cells will be less to produce melanin. Eventually, the hair will look completely gray.

People can get gray hair at any age. Some people go gray at a young age, whereas others may be in their 30s or 40s. How early we get gray hair is determined by our genes. This means that most of us will start having gray hairs around the same age as our parents or grandparents first did.

c. Answer the following questions.

1. Based on the article, briefly explain about our hair.
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2. What will happen if pigment cells stop producing melanin?
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3. What do people usually do when they discover their hair is turning gray?
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4. What makes our hair brown, black, red or blonde?
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5. What effect do our genes have on our hair?
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I recommend this Japanese free game シルフェイド幻想譚（しるふぇいど げんそうたん）!

シルフェイド幻想譚 that is a fantasy place called at Silfade Island set in the sky. It is one of my favourite free games. The system and the story is awesome. You can download it on this page:
http://www.vector.co.jp/soft/dl/win95/game/se363424.html
Someone says to you 'you are given 15 days to save the world' at the beginning of this game, so you start the save-the-world things. As you know, in a lot of RPGs the world almost come to an end when you reach the worst enemy, but the end will come in 15 days whatever you do or wherever you are in this game.
Please don't read the following, if you'd like to find out all of what will happen by yourself. I'm afraid the following might lose your spoil the surprise a bit. But not a lot, I think.





I believe I put enough line breaks to avoid ネタバレ that means revealing the content (Japanese people often do that on their blogs), so I'll begin the following here.
You can do anything you like until the end comes. If you don't want to be a hero, you can even take a liberty of doing nothing except stay at the inn and meeting the end there. But the instruction you are given clearly is only 'to save the world', so you should find out what to do next by yourself.
Though you can do anything you like, what you can do is rather limited by time, your strength and money. It is because any of your actions cost time and even several steps toward next location cost a hour. Plus, you are weak and your belongings are few at very first.
I think the wide variety and the limit on your action make this game very exciting. Though that might put make you under pressure a little, the ending and some events after it are very enjoyable.
About this game on Wiki:
http://en.wikipedia.org/wiki/Silfade_series