There is an interesting finding! Our DNA can help us1 whether we prefer coffee or tea.
Scientists in Australia studied2 questions. First, how our genes affected our3 ?Second, why we like some tastes more than others? Following the study，scientists understood why some of us prefer coffee4 others like tea more. The reason is simple. People who enjoy bitter tastes are more5 to drink coffee. Scientists noticed that some people were sensitive(敏感的) to the bitter taste of caffeine(咖啡因), so they were more likely to prefer coffee to tea.
Scientists6 the data(数据) from many countries. They also found that genes aren't the only factors affecting people's tastes. Other things like our changing environment, social7 or the effects of taking medicine can also turn us on or off coffee or tea. The researchers said we can learn to like coffee, because our favorite taste is8 not only by genes, but also environmental reasons. Although humans naturally9 bitterness，we can learn to enjoy bitter-tasting food10 the environment.
