現在中國流行快餐，但快餐對人體并沒有什么好處。請根據以下要點，以"Fast Food"為題為學校寫一篇海報，向同學們普及一下相關知識。要點如下：
1.優點：
（1）便利性；
（2）服務質量；
2.缺點：營養單一。
3.建議。
注意：
1.詞數100左右；
2.可以適當增加情節，以使行文連貫。

【考點】提綱作文．

【答案】Fast Food
Fast food is becoming more and more popular in China，especially among children and teenagers.
There are several reasons for its popularity.First，it is very convenient and saves a lot of time.You just go into a fast food restaurant，order your food，and your food is ready in no time.Second，you can either eat there or take it away.Third，the environment of fast food restaurant is both clean and comfortable.Fourth，it has excellent service，and the quality of food is guaranteed.
However，in terms of nutrition，fast food is far from satisfactory.It is usually not a balanced diet and low in nutritional value.
Fast food is only a good choice when you are in a hurry and turn to it once in a while.It's good for people，especially children，to eat fast food as little as possible.