Many people now say the benefits of switching to vegetarian diet which excludes meat and fish.
出自-2013年6月听力原文
However, some nutritionists advise against switching to a totally strict vegetarian diet
出自-2013年6月听力原文
Today many people have come to realize that help the environment and for the human race to survive, more of us will need to become vegetarian.
出自-2013年6月听力原文