1 . Many cars advertisements（广告）in the United States are red, blue or green. But nearly 75% of the new cars sold in the United States are black, white, silver or gray.
Les Jackson is a reporter who writes about cars. He says Americans prefer the cars whose colors do not show dirt clearly. In this way, the owners can wash their cars less to save money. In fact, some areas that are short of water do not allow people to wash their cars often.
Dan Benton works for a company called Axalta, which sells paint（涂料）to international car markers. He says white cars are usually sold at a better price than cars of other colors. And they absorb less energy, which means temperatures inside them are lower in warmer areas. Besides, research at Monash University in Australia suggests that there is a lower risk of car accidents during the day for white cars compared with darker ones. In China, many buyer say white makes a small car look bigger.
Axalta says about 11% of the cars sold in North America are red and 8% are blue. In South America, 10% of the new cars sold are red.
“Green cars have become less popular,” Dan Benton says. “In the mid 1990s, green was the most popular color in North America. But today, green cars are hard to find.”
In the future, people may not have to choose the color of their cars---technology may let owners change their cars’ paint color anytime.
1. Americans like to buy cars that don’t show dirt clearly in order to _________| A．save energy | B．save money |
| C．follow the government policy | D．reduce car accidents |
| A．looking more beautiful | B．absorbing less heat |
| C．being more expensive | D．being safer |
| A．South American | B．Australian |
| C．Chinese | D．North American |
| A．Red | B．White |
| C．Blue | D．Green |
2 . Do you want to live another 100 years or more? Some experts say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the human life span.
“I think we are knocking at the door of immortality(永生),” said Michael Zey, a Montclair State University business professor and author of two books on the future. “I think by 2075 we will see it and that’s a conservative estimate(保守的估计).”
At the conference in San Francisco, Donald Louria, a professor at New Jersey Medical School in Newark said advances in using genes as well as nanotechnology(纳米技术) make it likely that humans will live in the future beyond what was possible in the past. “There is a great effort so that people can live from 120 to 180 years,” he said. “Some have suggested that there is no limit and that people could live to 200 or 300 or 500 years.”
However, many scientists who specialize in aging are doubtful about it and say the human body is just not designed to last past about 120 years. Even with healthier lifestyles and less disease, they say failure of the brain and organs will finally lead all humans to death.
Scientists also differ on what kind of life the super aged might live. “It remains to be seen if you pass 120, you know; could you be healthy enough to have good quality of life?” said Leonard Poon, director of the University of Georgia Gerontology Centre. “At present people who could get to that point are not in good health at all.”
1. By saying“we are knocking at the door of immortality”,Michael Zey means_________.| A．they have got some ideas about living forever |
| B．they believe that there is no limit of living |
| C．they are able to make people live past the present life span |
| D．they are sure to find the truth about long living |
| A．the human body is designed to last past about 120 years |
| B．it is possible for humans to live longer in the future |
| C．it is still doubtful how long humans can live |
| D．people can live from 120 to 180 |
| A．a great effort |
| B．the conservative estimate |
| C．the idea of living from 200 to 300 years |
| D．the idea of living beyond the present life span |
| A．No Limit for Human Life |
| B．Living Longer or not |
| C．Science,Technology and Long Living |
| D．Healthy Lifestyle and Long Living |
