1. (2021高一下·浙江月考) 阅读理解

Islands in the world are famous for different things. But Hawaii is special for its variety of features. Beautiful sandy beaches, active volcanoes (火山), a great canyon (溪谷) and special history and culture add up to create its famously romantic atmosphere.

Formed by volcanoes at the bottom of the sea, the Hawaii islands are like a necklace in the middle of the Pacific Ocean, 6, 000 kilometers off the west coast of Mexico. There are eight main islands in the group, including Hawaii (or Big Island), Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai, and Niihau.

The youngest and biggest island, also called Hawaii was formed 430, 000 years ago and is still growing. Kauai, the oldest was formed 5.1 million years ago. For tourists, the sight of the lava (溶岩) that still flows from some of the volcanoes down to the sea, is a major attraction.

Hawaii is the newest and smallest state in the US. In 1900, the islands joined the US. In modem history, it will always be remembered for the attack on Pearl Harbor by the Japanese air force in 1941.

About 1, 000 years ago, the islands were settled by Polynesians (波利尼西亚人), Captain James Cook led the first group of Westerners there in 1778.

Native Hawaiians have a special culture and language. Although nowadays English is the official language of Hawaii, folk music and dancing are still widely practiced. The traditional dance of the islands is the hula, a Hawaiian word that means dance.

Hawaii's reputation for romance was spread when Hollywood started to use its typical music in movies in the 1960's.

Today, Hawaii is famous for its mix of cultures. Chinese, Japanese and Filipinos all live there. Chinese arrived in the islands as early as the late 18th century. Dr. Sun Yat-sen, the famous Chinese revolutionary, grew up there.

Everyone in Hawaii is a member of an ethnic minority (少数民族) and generally they exist in a pleasant harmony (和谐)of races and cultures.

Quantum (量子) computers have been on my mind a lot lately. A friend has been sending me articles on how quantum computers might help solve some of the biggest challenges we face as humans. I've also had exchanges with two quantum-computing experts. One is computer scientist Chris Johnson who I see as someone who helps keep the field honest. The other is physicist Philip Taylor.

For decades, quantum computing has been little more than a laboratory curiosity. Now, big tech companies have invested in quantum computing, as have many smaller ones. According to Business Weekly, quantum machines could help us "cure cancer, and even take steps to turn climate change in the opposite direction." This is the sort of hype (炒作) that annoys Johnson. He worries that researchers are making promises they can't keep. "What's new," Johnson wrote, "is that millions of dollars are now potentially available to quantum computing researchers.

As quantum computing attracts more attention and funding, researchers may mislead investors, journalists, the public and, worst of all, themselves about their work's potential. If researchers can't keep their promises, excitement might give way to doubt, disappointment and anger, Johnson warns. Lots of other technologies have gone through stages of excitement. But something about quantum computing makes it especially prone to hype, Johnson suggests, perhaps because ""quantum' stands for something cool you shouldn't be able to understand." And that brings me back to Taylor, who suggested that I read his book Q for Quantum.

After I read the book, Taylor patiently answered my questions about it. He also answered my questions about PyQuantum, the firm he co-founded in 2016. Taylor shares Johnson's concerns about hype, but he says those concerns do not apply to PyQuantum.

The company, he says, is closer than any other firm "by a very large margin (幅度)" to building a "useful quantum computer, one that "solves an impactful problem that we would not have been able to solve otherwise." He adds, "People will naturally discount my opinions, but I have spent a lot of time quantitatively comparing what we are doing with others"

Could PyQuantum really be leading all the competition "by a wide margin", as Taylor claims? I don't know. I'm certainly not going to advise my friend or anyone else to invest in quantum computers. But I trust Taylor, just as I trust Johnson.

More than 25 years ago, Saroo Brierley lived in rural（农村）India. One day, he played with his brother along the rail line and fell asleep. When he woke up and found himself alone, the 4-year-old decided his brother might be on the train he saw in front of him-so he got on.

That train took him a thousand miles across the country to a totally strange city. He lived on the streets, and then in an orphanage（孤儿院）. There, he was adopted by an Australian family and flown to Tasmania.

As he writes in his new book, A Long Way Home, Brierley couldn't help but wonder about his hometown back in India. He remembered landmarks, but since he didn't know his town's name, finding a small neighborhood in a vast country proved to be impossible.

Then he found a digital mapping program. He spent years searching for his hometown in the program's satellite pictures. In 2011, he came across something familiar. He studied it and realized he was looking at a town's central business district from a bird's-eye view. He thought,  “On the right-hand side you should see the three-platform train station”—and there it was. "And on the left-hand side you should see a big fountain"-and there it was. Everything just started to match.

When he stood in front of the house where he grew up as a child, he saw a lady standing in the entrance. "There's something about me, " he thought—and it took him a few seconds but he finally remembered what she used to look like.

In an interview Brierley says, "My mother looked so much shorter than I remembered. But she came forth and walked forward, and I walked forward, and my feelings and tears and the chemical in my brain, you know, it was like a nuclear fusion（核聚变）. I just didn't know what to say, because I never thought seeing my mother would ever come true. And here I am, standing in front of her. ”

The 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 (失智症) in later life and is they did, it came on a decade later than less sporty women.

Lead 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 (心血管的) fitness in middle age could delay or even prevent them from developing dementia."

For 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. A 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.

These 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

"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.