【正确答案】如果别人要你做报告或演讲，请记住把你要讲的内容的结构和要点讲清楚。为了把你的要点传达给对方，不要害怕重述和概括这些要点。同时，也要讲得有趣，让听众听得高兴，也许可以用 故事或者类比，恰当地解释你的观点。如果讲的东西太抽象、理论性太强，听久了就会让人感到乏味。等你选好题目，我们再就此详细讨论。

【答案解析】[解析]
If you are required to give a presentation or speech, just remember make the structure and points of what you're saying obvious to the audience. Don't be afraid to rephrase and summarize your main points to make sure you get them across. But make it enjoyable for the audience too by being amusing, if appropriate, or by, perhaps, illustrating points you make with an anecdote or an analogy. Something that is too abstract and theoretical can be a bit tedious to listen to for too long. Anyway we can discuss that in greater detail when you've got your subject chosen.

【正确答案】根据卫生部最新报告，现在13个州里，四分之一以上的成人超重或者肥胖。与去年报告相比，内华达州是唯一一个成人肥胖人口比例下降的州。 总体而言，成年肥胖人口比例从1985年的15%上升到2007年的32%。超重和肥胖人口占美 国成人总人口的64%。而儿童肥胖人口更是以惊人速度在增长，是20年前数字的3倍多。

【答案解析】[解析]
According to the latest report issued by the Department of Health, there are now 13 states where more than a quarter of the adult population is overweight or obese. Nevada is the only state that saw a decrease in the percentage of obese adults compared to last year's report. Overall, adult obesity rose from 15 percent in 1985 to 32 percent in 2007. Taken together, individuals who are either overweight or obese comprise 64 percent of the US adult population. Obesity among children is increasing at an even more alarming pace, having more than tripled in the past two decades.