| 阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项。 One of the most commonly-held beliefs about health and nutrition in the UK has been found to be not true according to a new scientific study．For many years British people have had ‘five-a-day’－that is at least five items of fruit or vegetables every day in order to improve their health and make themselves stay away from illness especially cancer．The recommendation was first put forward in 1990 by the World Health Organization which said that the ‘five-a-day’ diet could prevent cancer and other diseases．Enjoy! But do not expect too much． Since then many health campaigns have taken the advice．Then a study of 500 000 Europeans from 10 different countries showed that up to 50％ of cancers could be prevented by eating fruit and vegetables． However the new study which is led by researchers from a famous New York medical school says that only 2 . 5％ of cancers could be prevented by eating more fruit and vegetables． It seems that the key to avoiding cancers is to have a balanced healthy lifestyle which includes not smoking or drinking a lot of wine taking exercise and taking less fat． But medical charities have spoken out to remind people that diet is important in staying healthy．Cancer Research UK said “ It's still a good idea to eat your ‘five-a-day’ but remember that fruit and vegetables are pieces in a much larger lifestyle jigsaw(拼图)． |