Experts in nutrition(营养) suggest that we should eat at least five different kinds of vegetables and fruit a day. They are very necessary for our health and help our bodies work well. They can help reduce (减少) the risk of getting ill. There are a lot of vegetables and fruit to choose from and they taste delicious.    76   
It's easy to buy our food from the local supermarket, so why do we go to the trouble of growing our own? Here are several good reasons:  
   77   You can pick and eat it at once. When you have tried it, you will agree that vegetables and fruit that are eaten straight from the garden taste better than anything you can buy in a supermarket.  
You may want to cut down on your "food miles"-the distance that a product has travelled before it reaches your kitchen. Many food packages are flown halfway across the earth.    78   
Homegrown food is likely to be healthier. Food producers often use fertilizers(化肥) and pesticides (农药) which can end up in your food. If you grow your own, things are different.    79    You might also choose to grow some traditional vegetables and fruit. These often have more of the vitamins, minerals(矿物质) and protein(蛋白质) that keep you healthy.  
   80    And you can grow your own even if you only have a small backyard or a balcony(R E). Some food can grow well in pots, including lettuce, tomatoes, potatoes and carrots. You can recycle plastic bottles and cups to grow something. Just make sure there are holes for drainage (排水) and a small plate under them to catch drops of water.
Happy gardening!  
A．Best of all, you can grow your own!.  
B．But where to grow your own is a problem.
C．That’s not so good for you, or for the planet.
D．Food that you grow yourself is always fresh.  
E. If you have a large garden, growing your own is easy.  
F. You can control what goes on and into the food you eat.  
G. So it's better to eat more vegetables and fruit in our daily life.  
【答案与解析】
【文章大意】文章讲诉了人每天需要不同种类的蔬菜和水果，里面的维生素、矿物质和蛋白质可以让我们保持健康，这些蔬菜和水果很容易在超市买到，为什么还要自己种植呢？文章给出了几个理由，自己种的可以随时吃，也没有化肥和农药残留，也没有运输过程，比较新鲜，可知种植传统的蔬菜和水果，有更多的营养价值。
76．A 根据It's easy to buy our food from the local supermarket, so why do we go to the trouble of growing our own? Here are several good reasons:和选项，可知是最好你自己种植，起到引领下文的作用；故选A。
77．D 根据You can pick and eat it at once. When you have tried it, you will agree that vegetables and fruit that are eaten straight from the garden taste better than anything you can buy in a supermarket.和选项，可知是你自己种的很新鲜，起到引领下文的作用；故选D。
78．C 根据You may want to cut down on your "food miles"-the distance that a product has travelled before it reaches your kitchen. Many food packages are flown halfway across the earth和选项，可知是那对你或对行星都不好，起到衔接上文的作用；故选C。
79．F 根据Homegrown food is likely to be healthier. Food producers often use fertilizers(化肥) and pesticides (农药) which can end up in your food. If you grow your own, things are different和选项，可知是你能控制什么进到你吃的食物里，起到衔接上文的作用；故选F。
80．E 根据And you can grow your own even if you only have a small backyard or a balcony(R E). Some food can grow well in pots, including lettuce, tomatoes, potatoes and carrots. You can recycle plastic bottles and cups to grow something. Just make sure there are holes for drainage (排水) and a small plate under them to catch drops of water.和选项，可知是如果你有一个大花园，自己种植很容易，起到引起下文的作用；故选E。