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Oolong tea has great potential in the prevention of breast cancer, scientists believe. Laboratory tests showed the Chinese tea, used for centuries for its supposed health benefits, stopped the growth of breast cancer cells.
Scientists at St Louis University, Missouri, also analysed the rates of breast cancer and deaths from the disease across China. Their analysis found regions with high oolong tea consumption had generally lower rates of the disease. The team now say the tea offers promise as a non-toxic approach to prevent breast cancer, which one in eight women will develop in their lifetime.
Researchers, led by Dr Chunfa Huang, examined the effect of oolong tea on six breast cancer cell lines. The team said, “From our results, oolong tea, much like green tea, plays a role in stopping the growth of cancer cell.” Green tea has shown anti-cancer benefits in studies before, but oolong tea has been researched less.
Just two per cent of the world’s tea production is oolong tea, compared to about 78 per cent black tea, and 20 per cent green tea, the authors said. It is mostly produced in China, where people have been using it for its supposed medicinal purposes for a historic period of time. Therefore, the scientists also looked at 2014 data from the Chinese and Fujian province cancer registry annual report. They found that the incidence of breast cancer in the Fujian province was 35 per cent lower than the national average. Those who drank the most oolong tea had a 25 per cent lower incidence compared to the average Fujian, and 50 per cent lower than the national average. They also appeared to have a lower mortality rate—the death rate of high consumers of oolong tea in Fujian was 68 per cent lower than the national average, according to the findings published in the journal Anticancer Research. Although the results are significant, more research is required, the authors said.

1.What is the main idea of the first paragraph？

A Oolong tea has been drunk by Chinese people for centuries.

B Oolong tea is a kind of Chinese tea which has a very long history.

C Scientists believe Oolong tea is popular with its many benefits to people.

D Scientists have found that oolong tea may be effective in preventing breast cancer.

解析：选D。段落大意题。通读第一段可知该段主要讲述的是科学家发现乌龙茶能够帮助防治乳腺癌。故选D。

2.What can we get from the underlined sentence in Paragraph 2？

A The team think oolong tea can cure the breast cancer without side effects.

B Oolong tea can help to prevent breast cancer in a healthy and safe way.

C Oolong tea will treat one in eight women with breast cancer in the world.

D Those who have developed breast cancer can be cured with oolong tea now.

解析：选B。句意理解题。根据画线句子的语境可知，该句表达的意思是八分之一的妇女在一生中可能罹患乳腺癌，乌龙茶有望成为一种无毒的预防乳腺癌的方法给女性带来福音。故选B。

3.Which of the following is NOT true according to the passage?

A Green tea has long been shown to prevent the growth of cancer cell.

B Black tea accounts for the largest share of tea production in the world.

C The rate of breast cancer in the Fujian province was 35 per cent of the whole nation.

D Those who drank the most oolong tea had a lower mortality rate than those didn’t.

解析：选C。细节理解题。根据最后一段第四句They found that the incidence of breast cancer in the Fujian province was 35 per cent lower than the national average.可知科学家们发现福建省的乳腺癌发病率比全国平均水平低35%，而非占全国乳腺癌发病率的35%。故选C。

4.What is most likely to be written after the fourth paragraph?

A The reason of doing further research about oolong tea.

B The significance of oolong tea in people’s daily life.

C The long history of oolong tea growing in China.

D The specific steps to extract oolong tea into anti-breast cancer drugs.

解析：选A。推理判断题。根据段最后一句Although the results are significant, more research is required, the authors said. 可知科学家们还要继续研究乌龙茶，因此接下来的内容应与研究有关。故选A。