[解析]
BBBC
M:Sonya,can you give me some advice on healthy eating?
W:Share a bike.The best thing you can probably do is add some vegetables to your main meal.
M:You mean people like me who tend to eat chocolate and cakes should change to fruit and vegetables instead?Right?
W:That's right,it's just common sense.
M:So how can you keep such a slim figure?Just keep away from fries and hamburgers?
W:Yes,and red meat.White meat such as chicken and duck is healthier.
M:And what about fish?My mom always makes us eat fish,but I never think it has a good taste.
W:Yeah,at least once or twice a week you should eat fish.It's full of goodness and very easy to digest.
M:Okay,then,will the healthy things make us live longer?
W:Yeah,in fact,some research shows that eating more fruit and vegetables can reduce your risk of cancer by as much as twenty per cent.
M:That's amazing.Please explain why.