crops, they say, has also led to an increase in weeds and insects that have resistance to farm chemicals. And, they argue, there is still no scientific evidence of the long­term safety of these foods.

　　Four scientists recently took on those questions in a debate, facing off two against two on GM foods. In these Oxford­style debates, the team that gets the most people on its side by the end is the winner.

　　Before the debate, the audience at the Kaufman Music Center in New York voted 32 percent in favor of GM foods, with 30 percent against and 38 percent undecided. Afterward, 60 percent agreed with GM foods, and 31 percent disagreed - making the side arguing in favor of GM foods the winners of this debate.

　　语篇解读：本文是一篇议论文。文章主要报道了科学家们针对转基因食品进行辩论的情况。

　　5．What's the main purpose of Paragraph 1?

　　A．To advertise GM foods.

　　B．To show what GM foods are.

　　C．To introduce the topic of the text.

　　D．To explain why GM foods are developed.

　　解析：选C　写作意图题。文章第一段提出转基因食品产生的原因并在最后连续提了四个问题，表示人们对它的担忧，从而引出讨论的话题。

　　6．What's the main focus of the debate?

　　A．The necessity of producing GM foods.

　　B．Whether GM crops can help to avoid hunger.

　　C．Whether GM foods are scientifically examined.

　　D．GM foods' effect on human health and the environment.

　　解析：选D　细节理解题。由第二段中的"use fewer environmentally damaging farm chemicals" "GM foods are safe to eat and that there's no actual evidence of any health risks"和第三段的"are concerned that these foods ... environment and people's health"可知，科学家争论的焦点是转基因食品对人类健康及环境的影响。

　　7．What do we know about the debate at the Kaufman Music Center?

　　A．There were four votes for the debate.

　　B．About half of the audience had no idea about it.

C．It was a face­to­face debate between two and two.