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New research suggests that our DNA helps us to decide whether we prefer coffee or tea. Researchers from the University of Queensland in Australia studied how our genes affected our taste and why we like some tastes more than others. Following the research, researchers believe they know why some of us prefer coffee while others like tea more. The researchers found that people who like more bitter tastes are more likely to drink coffee. The researchers said they found something strange in their research. People who were more sensitive to the bitter taste of caffeine were more likely to prefer coffee to tea. They were also more likely to drink more coffee than those who were not so sensitive to caffeine.

Researchers looked at data on more than 400,000 men and women in the United Kingdom. They also looked at an Australian study that compared the tastes of 1,757 twins with their siblings'. The researchers said genes aren't the only factors affecting people's tastes. Other things like our changing environment, social factors 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. Dr Liang-Dar Hwang said, "Bitter taste perception is shaped not only by genetics, but also environmental factors. Even though humans naturally dislike bitterness, we can learn to like or enjoy bitter-tasting food after being exposed to environmental factors."

1.What did researchers study the effect of genes on?

A Our tastes.

B Black tea.

C Coffee beans.

D Blood and bones.

解析：选A。细节理解题。根据第一段第二句Researchers from the University of Queensland in Australia studied how our genes affected our taste and why we like some tastes more than others.可知澳大利亚昆士兰大学的研究人员研究了我们的基因如何影响我们的味觉和为什么我们比其他人更喜欢某些味道，故选A。

2.What do people who are more sensitive to bitter tastes prefer?

A Pure water.

B Coco Cola.

C Tea.

D Coffee.

解析：选D。细节理解题。根据第一段The researchers found that people who like more bitter tastes are more likely to drink coffee. 可知喜欢苦的人，喜欢咖啡，故选D。

3.Whose tastes did the researchers compare the tastes of twins with?

A Their siblings’.

B Their parents’.

C Their friends’.

D Their kids’.

解析：选A。细节理解题。根据第二段第二句They also looked at an Australian study that compared the tastes of 1,757 twins with their siblings’.可知他们将1757对双胞胎的口味与他们兄弟姐妹的口味进行了比较，故选A。

4.What can we learn from the second paragraph?

A We can’t learn to like coffee if we dislike it naturally.

B Environmental factors can’t shape people’s taste perception.

C People's tastes are affected not only by genes.

D Taking medicine can’t affect people’s tastes.

解析：选C。推理判断题。根据第二段The researchers said genes aren't the only factors affecting people's tastes.可知基因并不是影响人们口味的唯一因素，故选C。