题目内容：

阅读下列短文，从每小题所给的四个选项(A. B. C和D) 中，选出最佳选项。

Is veg food healthier than non-veg food? I feel this is a very common topic that people speak on．Please give me your opinions on this topic．
Rao 12-18-08	So far as veg food is concerned, it is also proved to be a healthy and nutritious diet, but has very few items which can provide us with proteins, but if you see non-veg food like eggs, chicken, and many more, such foods have a large content of proteins in them.
Sai 12-19-08	Man basically is herbivorous（食草的）. If we look at the animal kingdom We can see that all the herbivorous animals have the similar dental（牙齿的） structure, which clearly shows that the human being also ought to be vegetarian by birth. It is only the living conditions that make man carnivorous（食肉的）. The vegetarian foods are easily digestible.
Santos 12-20-08	Non-veg food items are better than veg items. A healthy person requires complete diet and veg+ meat makes the diet complete. The only caution that needs to be taken is not to have non-veg items on a daily basis. Once in a week or couple of weeks will be best.
Krishna 01-03-09	When we eat non-veg, we are all veg by nature. The chicken that we eat feeds on grains, the mutton that we eat feeds on grass, and the fish that we eat feeds on simple plants. So non-veg food by logic（逻辑）is better and suited for hauman beings.
Khan 01-05-09	Non-veg food is equally important in our diet as it helps in many ways, especially fish and other seafood as fish contains omega 3 which makes our immune system（免疫系统）stronger. Do you know that most of the veg food put together does not contain as much omega 3 as fish alone contains!
Khan 01-05-09	Non-veg food is equally important in our diet as it helps in many ways, especially fish and other seafood as fish contains omega 3 which makes our immune system（免疫系统）stronger. Do you know that most of the veg food put together does not contain as much omega 3 as fish alone contains!

1.According to Rao, what is the problem with veg food?

A．It damages our immune system.  B．It has few nutrients.

C．It contains too much omega      D．It is lacking in protein.

2.In the opinion of Sai, humans are born vegetarian because humans______.

A．have the same teeth structure as plant-eating animals

B．believe that veg foods are good for their teeth

C．belong to the plant-eating animal family

D．can adapt to the living conditions like plant-eating animals

3.What advice is given by Santos?

A．To have a saily veg+ meat diet.  

B.  Not to eat non-veg food every day.

C．To eat digestible food every day. 

D．Not to eat food without protein.