In the second part of the study, eleven people drank five to six cups of black tea every day. Ten other people drank the same amount of instant coffee. That is dried coffee mixed with hot water.

　　Two weeks later, and again two weeks after that, the researchers tested the blood of all twenty-one people. They also looked at what happened when they added bacteria to the blood cells. They found that the tea drinkers produced five times more interferon after they started drinking tea. The coffee drinkers did not produce interferon.

　　Doctor Jack Bukowski led the study. He says the antigens added to the gamma delta T cells were responsible for the increased reaction to the bacteria. He says the study also showed that the cells were able to remember the bacteria and fight them again the next time.

　　Earlier research already has found that tea can help prevent heart disease and cancer. Doctor Bukowski says the new study must be repeated with more people. If the findings prove to be true, he says, then tea drinking might also help protect against bacterial infections. He says the amino acid L-theanine could be removed from tea and used as a drug to strengthen the body’s defenses.

　　1. We may know from the text that ________ can be found in different kinds of tea.

　　A. Gamma delta T cells B. L-theanine

　　C. interferon

　　D. bacteria

　　答案解析：答案为B。本题为推理题。由第一段

【2016届山西长治高考英语二轮复习阅读理解精练（5）】相关文章：

★ 2017届高考英语二轮复习书面表达限时测验：6（含解析）

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（19）附答案

★ 【北京专用】2014届高考英语一轮复习方案课时作业：必修3 Unit 5 Canada

★ 【北京专用】2014届高考英语一轮复习方案课时作业：选修8 Unit 2 Cloning

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习短文改错专题训练：训练4 短文改错（Ⅳ）（含解析）

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（12）及答案

★ 2017高考四川省广安市英语阅读理解一轮系列训练：2（含解析）

★ 2014届高考英语一轮复习课时作业(三)必修1Module 3《My First Ride on a Train》（外研版）

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（4）及答案

★ 四川省2016届高考英语一轮复习课时作业（29） Module 5 The Great Sports Personality 外研版必修5