Article: The fictional Chinese-American detective Charlie Chan was the subject of popular books and movies for many decades. In recent years, however, the character has been criticized as an ill image of Asian-Americans. Yunte Huang, an English professor at the University of California, says that's not the case. He has been exploring the character and real-life policeman who inspired him. Charlie Chan has been a familiar character to readers and film-goers, beginning in the 1920s. The detective solved crimes around the world in more than 40 films through the 1940s, and with the invention of television, found a new audience in the 1950s and 1960s. Huang discovered Charlie Chan through books by American author Earl Derr Biggers, who created the character. "One day, I happened to find two Charlie Chan novels. At that point I thought I knew that he was a negative character against Asians, but when I read the book," he says, "I was immediately attracted. Ever since then, I've been a fan of Charlie Chan." As a fan of the books and films, Huang was surprised to learn that Charlie Chan was based on a real detective named Chang Apana, who was born to Chinese parents in Hawaii around 1871. Apana worked as a cowboy, and joined the Honolulu police force in 1898. "He almost immediately became a local legend because as a former cowboy," says Huang, "he would walk the most dangerous areas in Chinatown carrying a bullwhip instead of a gun. He didn't need that." Although some say the image of Charlie Chan, with his broken English, is embarrassing for Asian-Americans, Huang believes Chan's broken English and unusual ancient sayings were part of his charm . "Let me just quote a few - 'Actions speak louder than French,' or 'Mind like parachute . Only function when open.' Charlie Chan always owes these instructive sayings to Confucius' eastern wisdom. For Huang, the fictional Charlie Chan is highly entertaining, while the real-life policeman, Chang Apana, is a Chinese-American success, whose story is worth telling. Question: According to the passage, we know that Charlie Chan _ . Yes or no, is the answer "was a character in books and movies based on a real detective"?
No

Article: 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... Question: The story is mainly written to_. Yes or no, is the answer "tell us that it's difficult to make a significant change in our weight"?
No

*Question*
Article: Recently, some concerns have been raised about the health of the world's banana plants. Many media reports have said that bananas may completely disappear in the coming ten years. Bananas are one of the world's most important food crops. They are also the fourth most valuable export. Bananas do not grow from seeds. Instead, they grow from existing plants. Bananas are threatened by disease because all the plants on a farm are copies of each other. They all share the same genetic weaknesses. For example, the Cavendish banana is most popular in American markets. It is an important export crop. However, some kinds of fungus organisms easily infect the Cavendish. Black Sigatoka disease affects the leaves of Cavendish banana plants. The disease is controlled on large farms by putting chemicals on the plant's leaves. Farmers put anti-fungal chemicals on their crops up to once a week. Another fungal disease is more serious. Panama disease attacks the roots of the banana plant. There is no chemical treatment for this disease. Infected plants must be destroyed. Panama disease has affected crops in Southeast Asia, Australia and South Africa. There is concern that it may spread to bananas grown in the Americas. This could threaten an important export product for Central and South America. The International Network for the Improvement of Banana and Plantain, whose headquarter lies in France, supports research on bananas. The group says that more research must be done to develop improved kinds of bananas. The group says that fungal diseases mainly affect only one kind of banana. In fact, there are five-hundred different kinds of bananas. The United Nations Food and Agriculture Organization says the Cavendish banana represents only ten percent of world production. The UN agency says farmers should grow different kinds of bananas. This protects against diseases that affect only one kind. Experts warn that disease may cause the Cavendish banana to disappear. This has already happened to one popular banana because of its... Question: Bananas are threatened by diseases because _ . Yes or no, is the answer "they have genetic weaknesses against disease."?
**Answer**
No