【正文】 ise have declined is hardly a new discovery. Since the beginning of the industrial revolution， technology and economic growth have helped to create a world in which taking exercise is more and more an option rather than a necessity. But only recently have enough good data been collected from enough places to carry out the sort of analysis Dr. Hallal and his colleagues have engaged in. There are mon themes in different places. Unsurprisingly， people in rich countries are less active than those in poor ones， and old people are less active than young obviously， women tend to exercise less than men—34% are inactive， pared with 28% of men. But there are exceptions. The women of Croatia， Finland， Iraq and Luxembourg， for example， move more than their male countrymen. Malta wins the race for most slothful country， with 72% of adults getting too little exercise， and Swaziland and Saudi Arabia are in close behind， with 69%.In Bangladesh， just 5% of adults fail to exercise enough. Surprisingly， six Americans in ten are active enough according to ’s study， pared with fewer than four in ten British. These high rates of inactivity are worrying. Human beings seem to have evolved to benefit from exercise while deliberately avoiding it whenever they can. In a state of nature it would be impossible to live a life that did not provide enough of it. But that is no longer the case. Actually lack of enough activity these days has nearly the same effect on life span as smoking. 21． We may learn from Paragraph 1 that . A. the decline of exercise rates is newly discovered B. the study suggests 31% of female adults get too little exercise C. the industrial revolution has changed the way people live to some degree D. the good enough data has been collected from only one country 22． According to the study， women of Luxembourg . A. have little time to exercise B. hate to get regular exercise C. take more exercise to lose weight D. exercise more than men in their country 23． The underlined word “slothful” in Paragraph 3 most probably means “ ”． A. lazy B. rich C. powerful D. unpopular 24． What can be the best title for the text? A. Benefits of Taking Exercise B. New Health Discovery C. Evolvement of Human Beings D. Worldwide Lack of Enough Exercise B Leonardo da Vinci’s mother may have been a Chinese slave according to a new research by an Italian historian and novelist—Angelo Paratico, who has spent the last 20 years living and working in Hong Kong, researching the links between his homeland and China over the past half century. Mr Paratico said the documents he has uncovered during two years of research form the basis of his latest book Leonardo Da Vinci, a Chinese scholar lost in Renaissance(文 藝復(fù)興 )Italy. The book, which is due to be published next year, uncovers evidence that there’s a link between Da Vinci and the Far East. Speaking to the South China Morning Post, Mr Paratico said, “I am sure that Leonardo’s mother was from the East, but to make her a Chinese, we need to use a deductive method(演繹法 ). One wealthy client of Leonardo’s father had a slave called Caterina. After Leonardo’s date of birth, she disappeared from the documents． She was no longer working there.’’ It is believed that his mother was called Caterina, who, according to some reports, was a local peasant. But Mr Paratico’s new work claims it is most likely that Da Vinci’s mother was a slave. Supporting his theory, he said, “During the Renaissance, countries like Italy and Spain were full of slaves from the East.” He claimed that there were certain aspects of Da Vinci’s life and works which suggest a Chinese link. For instance, he was writing with his left hand from left to right and he was also a vegetarian, which was not mon. Mona Lisa is probably a portrait of his mother， as Sigmund Freud said in 1910. On the back of Mona Lisa, there is a Chinese landscape and even her face looks Chinese. Mr Paratico said he believes the only way to solve the mystery is to dig out some of Da Vinci’s relations in Florence and extract some DNA. 25． What is Mr Paratico’s latest book based on? A. His research findings． B. His living experience． C. His final visit to Italy． D. His interest in Renaissance． 26． What may suggest there is a link between Da Vinci and Chinese? A. His working habit． B. His ways of writing． C. His birth date． D. His