2022 年 浙江卷（1月）

1For nearly a decade now, Merebeth has been a self-employed pet transport specialist. Her pet transport job was born of the financial crisis（危机）in the late 2000s. The downturn hit the real estate （房地产）firm where she had worked for ten years as an office manager. The firm went broke and left her looking for a new job. One day, while driving near her home, she saw a dog wandering on the road, clearly lost. She took it home, and her sister in Denver agreed to take it. This was a loving home for sure, but 1, 600 miles away. It didn't take long for Merebeth to decide to drive the dog there herself. It was her first road trip to her new job.

2Merebeth's pet delivery service also satisfies her wanderlust. It has taken her to every state in the US except Montana, Washington and Oregon, she says proudly. If she wants to visit a new place, she will simply find a pet with transport needs there. She travels in all weathers. She has driven through 55 mph winds in Wyoming, heavy flooding and storms in Alabama and total whiteout conditions in Kansas.

3This wanderlust is inherited from her father, she says. She moved their family from Canada to California when she was one year old, because he wanted them to explore a new place together. As soon as she graduated from high school she left home to live on Catalina Island off the Californian coast, away from her parents, where she enjoyed a life of sailing and off-road biking.

4It turns out that pet transporting pays quite well at about $30 000 per year before tax. She doesn't work in summer, as it would be unpleasantly hot for the animals in the car, even with air conditioning. As autumn comes, she gets restless—the same old wanderlust returning. It's a call she must heed alone, though. Merebeth says, "When I am on the road, I'm just in my own world. I've always been independent-spirited and I just feel strongly that I mush help animals. *'

1The United States rose to global power on the strength of its technology, and the lifeblood that technology has long been electricity. By providing long-distance communication and energy, electricity created the modem world. Yet properly understood, the age of electricity is merely the second stage in the age of steam, which began a century earlier.

2"It is curious that no one has put together a history of both the steam and electric revolutions." writes Maury Klein in his book The Power Makers, Steam, Electricity, and the Men Invented Modem America. Klein, a noted historian of technology, spins a narrative so lively that at times it reads like a novel.

3The story begins in the last years of the 18th century in Scotland, where Watt perfected "the machine that changed the world". Klein writes, "America did not invent the steam engine, but once they grasped its passwords they put it to more uses than anyone else. "

4Meanwhile, over the course of 19th century, electricity went from mere curiosity to a basic necessity. Morse invented a code for sending messages over an electromagnetic circuit. Bell then gave the telegraph a voice. Edison perfected an incandescent bulls that brought electric light into the American home.

5Most importantly, Edison realized that success depended on mass electrification, which he showed in New York City. With help from Tesla, Westinghouse's firm developed a system using alternating current, which soon became the major forms of power delivery.

6To frame his story, Klein creates the character of Ned, a fictional witness to the progress brought about by the steams and electric revolutions in America during one man's lifetime. It's a technique that helps turn a long narrative into an interesting one.

1The benefits of regular exercise are well documented but there’s a new bonus to add to the ever-growing list. New researchers found that middle-aged women who were physically fit could be nearly 90 percent less likely to develop dementia in later life, and as they did, it came on a decade later than less sporty women.

2Lead researcher Dr. Helena Horder, of the University of Gothenburg in Sweden, said : "These findings are exciting because it’s possible that improving people's cardiovascular （心血管）fitness in middle age could delay or even prevent them from developing dementia. "

3For the study, 191 women with an average age of 50 took a bicycle exercise test until they were exhausted to measure their peak （最大值的） cardiovascular capacity. The average peak workload was measured at 103 watts.

4A total of 40 women met the criteria for a high fitness level, or 120 watts or higher. A total of 92 women were in the medium fitness category; and 59 women were in the low fitness category, defined as a peak workload of 80 watts or less, or having their exercise tests stopped because of high blood pressure, chest pain or other cardiovascular problems.

5These women were then tested for dementia six times over the following four decades. During that time, 44 of the women developed dementia. Five percent of the highly fit women developed dementia, compared to 25 percent of the women with medium fitness and 32 percent of the women with low fitness.

6"However, this study does not show cause and effect between cardiovascular fitness and dementia, it only shows an association. More research is needed to see if improved fitness could have a positive effect on the risk of dementia and also to look at when during a lifetime a high fitness level is most important. " She also admitted that a relatively small number of women were studied, all of whom were form Sweden, so the results might not be applicable to other groups.