You hear this,"No wonder you are fat.All you ever d0 is eat."You feel sad."I skip my breakfast and supper.I run every morning and evening.What else can I do?" Basically you can do nothing.Your genes,not your life habits,determine your weight and your body constantly tries to maintain it. Albert Stunkard of the University of Pennsylvania found from experiments that"80 percent of the children of two fat parents become fat,as compared with no more than 14.percent of the children of two parents of normal weight." How can obese people become thinner through dieting? Well,dieting can be effective.but the health costs are great. Jules Hirsch,a research physician at Rockefeller University,did a study of eight fat people.They were.given a liquid formula providing 600 calories a day.After more than 10 weeks,the subjects lost on average 45 kg.But after leaving the hospital,they all regained the weight. The results were surprising:by metabolic measurement,fat people who lost large amounts of weight seemed like they were starving.They had psychiatric problems.They dreamed of food or of breaking their diet They were anxious and depressed.Some wanted to kill themselves.They hid food in their rooms. Researchers warn that it is possible that weight reduction doesn't result in normal weight,but in an abnormal state lust like that of starved non.obese people. Thin people, however,suffer from the opposite.They have to make a great effort to gain weight Ethan Sims of the University of Vermont got prisoners to volunteer to gain weight.In four to six months--they ate as much as they could.They succeeded in increasing their weight by 20 to 25 percent. But months after the study ended,they were back to normal weight and stayed there. This did not mean that people are completely without hope in controlling their weight.It means that those who tend to be fat will have to constantly battle their genetic inheritance if they want to significantly 1ower their weight. The findings also provide evidence for something scientists thought was... From the text,we know that the body can still feel comfortable A) when the weight goes up or down by 6 kg B) when the weight goes up or down by l0 kg C) when the weight is increased by 20 to 25 percent D) when the weight is decreased by 20 to 25 percent
A
(Question)
You might say that Barack Obama was elected President of the US because he knows how to give a speech. In 2004, the little-known Obama gave a speech at the Democratic National Convention . It was a great speech -- poetic, and inspiring. The people who heard it would remember it for a long time. Since 2004, Obama has written and delivered thousands of speeches. There are usually praised for two reasons: he treats the audiences like intelligent adults, and he is able to express complicated ideas in a straightforward, natural way. Before becoming President, Obama was a lawyer, a college professor, and a successful writer - his two memoirs have become best sellers. The skills he needed to succeed in his previous jobs have also contributed to his success as a speechmaker. As a lawyer, Obama learned how to make strong, convincing arguments. As a professor, he learned how to explain complex subjects in ways that helped students understand without boring them. As a writer, he learned how to use languages to have a powerful influence on his audience. A famous American musician even turned one of Obama's early speeches into a song during the election campaign. Secret weapons of Obama Writing team: Obama has a team of people who write his speeches. The writers chat with Obama for hours about what he wants to say. Then listen to recordings of past presidential addresses and seek advice from advisers. Obama usually edits and rewrites the drafts several times. Make fun of the guests: Obama starts his speech by gently making fun of his guests. His opening lines attract the audience's attention while giving them an opportunity to relax and laugh at themselves and each other. Make fun of himself: Obama laughs at his past mistakes and is never afraid of showing them to the public. Obama delivers speeches to audiences large and small. He can make his audiences laugh or cry. His speeches are always thoughtful, well written and just right for each occasion. When delivering a speech, Obama _ . A) usually starts with some famous saying B) sometimes turns his speech into a song C) sometimes shares a joke with the audience D) is very strict most of the time
(Answer)
C
Ques:From birth to death, the word kick has been given an important part in expressing human experience. The proud and happy mother feels the first signs of life kicking inside her body. And that same life------many years later------ comes to its end in a widely-used expression, to kick the bucket( ) . The expression to kick the bucket is almost 200 years old. One belief is that it started when an English stableman killed himself by hanging while standing on a bucket. He put a rope around his neck and tied it to a beam in the ceiling, and then kicked the bucket away from under him. Another old expression that comes from England is to kick over the traces. Traces were the chains that held at horse or mule to a wagon or plow. Sometimes, an animal refused to obey and kicked over the traces. Kick around is an expression that is heard often in American English. A person who is kicked around is someone who is treated badly. Usually he is not really being kicked by somebody's foot. He is just not being treated with the respect that all of us want. A person who has kicked around for most of his life is someone who has spent his life moving from place to place. In this case, kicking around means moving often from one place to another. Kick around has another meaning when you use it with the word idea. When you kick around an idea, you are giving that idea some thought. There is no physical action when you kick a person upstairs, although the pain can be as strong .You kick a person upstairs by removing him from an important job and giving him a job that sounds more important, but really is not. Still another meaning of the word kick is to free oneself of a bad habit, such as smoking cigarettes. Health campaigns urge smokers to kick the habit. Mr. Smith always kicked his sons around with no excuse, in other words, his sons _ A) expressed their ideas freely B) were looked after well C) moved their family often D) were treated badly

Ans:
D