A/D: In the past people ate food that are better for health than they do today.
1.The food we eat now always contains all kinds of chemicals, such as additives and pesticides.
2.Because of the advanced modern technology, genetically modified food has been introduced to the public.
3.Fast food is popular with the public due to the fast rhythm of modern society.
key words & phrase
go hand in hand, go from bad to worse, on the threshold of sth, in all probability, have a bearing on sth