阅读理解。阅读下列短文, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。

     Isaac Stern was  more  than a great violin player.He was one of the most honored musicians in the world.He was an international  cultural ambassador.He was a major supporter of the arts in America and in other countries.He was a teacher and activist.

     Isaac Stern was born in 1920 in what is now Ukraine.His parents moved  to  San Francisco，California the following year.His mother began teaching Isaac the piano when he was six. He began taking violin lessons after hearing a friend play the instrument.Later，he began studying music at the San Francisco Conservatory(音乐学院)．He progressed quickly.When he was 16，he played with the San Francisco Symphony Orchestra.The next year，he performed in New York City and was praised by music critics.

     During World War II ，Mr.Stern played for thousands of American soldiers.It was the first time many of them had heard classical music.After the war，he was the first American violinist to perform in a concert in the Soviet union.He also supported young musicians and cultural organizations in Israel.

    In 1979，Isaac Stern visited China.He met with Chinese musicians and students.He taught them about classical Western music.His visit was made into a film，which is called From Mao to Mozart：Isaac Stern in China.It won an Academy Award for best documentary film.

     In 1984，Isaac Stern received the Kennedy Center Honors Award for his gifts to American culture through music.He expressed his thoughts about the part that music plays in life.He said he believed that music makes life better for everyone，especially children.

     Mr.Stern supported and guided younger classical musicians.They include violinists Itzhak Perlman and Pinchas Zukerman，cellist Yo­Yo Ma，and pianist Yefim Bronfman.

     Isaac Stern died in 2001 at the age of 81.He was a major influence on music in the 20th century.He leaves the world richer with his many recordings.

    If you've been to Europe a few times already, chances are that you've hit all the big destinations: London, Paris, Rome,Berlin.On your next trip you can either visit those same cities a second time,or instead you can take a chance and walk the streets of some cities that are a little bit smaller,a little bit less famous,but still full of European grace and charm.Here are four European cities to visit that you probably haven't been to yet.

    Besancon,France

    This hidden French city has had a long reputation for being a well-kept secret.It can be at once sleepy with few tourists but abundant galleries,restaurants,and a wonderful Beaux Arts museum whose collection is second only to the Louvre.The city is wound by the River Doubs and also touts (吹捧) its own UNESCO World Heritage Site in the Citadel,home to several small museums and a zoo.

    Seville,Spain

    For the tourist who is already tired of Barcelona and Madrid,Seville offers a different take (意见) on Spain. Located on the Southern coast,it keeps beautiful signs of the long period of Moorish rule,nowhere more than in the Alcázar palace building,just one of the city's UNESCO World Heritage Sites.Seville has over a dozen museums, tropical parkland,and probably the best tapas (餐前小吃) culture in all of Spain.

    Ghent,Belgium

    Ghent is a city that looks like it should be the setting for a fairy tale. All of the typical Belgium features abound here-waffles and beer.Every year from Saturday before July 21,Ghent hosts a ten-day festival.This music and theater festival draws almost 2 million visitors,as the city streets transform into performance spaces for performers,buskers (街头艺人) and musicians.

    Palermo,Italy

    Palermo is the capital city of Sicily,the southern island off the coast of mainland Italy.The city has an ancient history,and the various cultures that have controlled the island through the years have all left their marks on it. You can see winding street markets,antique (古玩) fairs,and open air nightclubs here.

    That cold January night,I was growing sick of my life in San Francisco.There I was,walking home at one in the morning after a tiring practice at the theatre.With the opening night only a week away,I was still learning my lines.I was having trouble dealing with my part-time job at the bank and my acting at night at the same time.As I walked,I thought seriously about giving up both acting and San Francisco.City life had become too much for me.

    As I walked down empty streets under tall buildings,I felt very small and cold.I began running,both to keep warm and to keep away from any possible robbers.Very few people were still out except a few sad-looking homeless people under blankets.

    About a block from my apartment,I heard a sound behind me.I turned quickly,half expecting to see someone with a knife or a gun.The street was empty.All I saw was a shining streetlight.Still,the noise had made me nervous,so I started to run faster.Not until I reached my apartment building and unlocked the door did I realize what the noise had been.It had been my wallet falling to the sidewalk.

    Suddenly I wasn't cold or tired anymore.I ran out of the door and back to where I'd heard the noise.Although I searched the sidewalk anxiously for fifteen minutes,my wallet was nowhere to be found.

    Just as I was about to give up the search,I heard the garbage truck pull up to the sidewalk next to me.When a voice called from the inside,"Alisa Camacho"I thought I was dreaming.How could this man know my name?The door opened,and out jumped a small red-haired man with an amused look in his eye."Is this what you're looking for" he asked,holding up a small square shape.

    It was nearly 3 a.m. by the time I got into bed.I wouldn't get much sleep that night,but I had gotten my wallet back.I also had gotten back some enjoyment of city life.I realized that the city couldn't be a bad place as long as people were willing to help each other.

    Tiny as they are, bats have the ability to “see” in the dark by using a special skill called echolocation(回声定位法). They make noises and wait for sound waves, or an echo, to bounce(反弹) back off objects. They can tell the distance of various objects by how quickly the sound waves bounce back off them. If no sound bounces back, they can then fly forward.

    This special ability has been simulated in the human world for a long time, such as in submarines and planes, whose sonar(声呐) systems are somewhat similar to echolocation. But apart from helping vehicles “see” where they are, what if blind people could use echolocation for themselves? It turns out, some already are.

    American Daniel Kish, who is blind, is known as “Batman”. This isn't because he walks around in a cape and a mask, but because he has a bat-like ability to locate where he is through sharp clicks he makes by moving his tongue against the roof of his mouth. Kish is so skilled at echolocating that he can ride a bike and hike on his own.

    Recently, research carried out at the University of Durham in England shed some light on the power of human echolocation.

    Kish worked with a group of scientists who studied the way blind people listen to the echoes that they produce from clicks.

    The team, which conducted experiments with other volunteers, found that people were capable of hearing even very faint echoes, ones far fainter than had been previously thought.

    Speaking to The Independent, Lore Thaler, lead scientist of the group, said, “We found that in some conditions, they were really faint – about 95 percent softer than the actual clicks, but the echolocators were still able to sense this.”

    Andrew Kolarik of the University of Cambridge is another expert in echolocation. Reacting to the Durham study, he told BBC News that echolocation “can be very useful at providing information at face or chest height” and could help people “avoid objects like low hanging branches that might not get detected by the cane or a guide dog”.

    Although Kish's skill is remarkable, there's hope for other blind people who want to use echolocation. According to BBC News, echolocation is a skill blind people can acquire and develop, just like learning a language. As Kolarik said: “Teaching echolocation skills could provide blind people with the means of exploring new places.”

    Many children are interested in dinosaurs (恐龙). If you have a child who loves dinosaurs, then here is some good news for you. There is an exhibition of dinosaurs at the Philip J. Currie Dinosaur Museum in Wembley, Albert A. You can plan a family road trip there. Give your child a surprise and you'll enjoy your time there as a family.

    Sitting just 19 kilometers west of Grande Prairie, the Philip J. Currie Dinosaur Museum was opened in 2015 and has collections that include fossils（化石）of sea animals, art works from different dinosaurs, a large family theater, as well as an outdoor discovery fossil walk, a large outdoor playground and the onsite Dine-O-Saur restaurant. Experience the dinosaurs' world like never before as you watch dinosaurs coming alive in movies. Learn about how these animals lived and breathed.

    You can check out Dinosaurs Unearthed and all of the other exciting exhibitions at the Philip J. Currie Dinosaur Museum on the following days/ time periods:

    September 1st—May 31st:

    Tuesday—Sunday 10: 00 a. m. — 6: 00 p. m.

    Closed on Mondays

    June 1st—August 31st:

    Saturday—Monday 10: 00 a. m. — 6: 00 p. m.

    Tuesday—Friday 10: 00 a. m. — 8: 00 p. m.

    Admission (门票):

    Adults: $ 14 each

    Seniors (65+): $ 11 each

    Students (with ID) and children (5—17): $7 each

    Children under 5: free

    Family (2 adults and up to 4 children): $40

    If you want to see a National Geographic film or a full-length film during your visit, it is an extra $2— $4.

    For more information, please visit the museum's website at www.dinomuseum.ca.

The idea of climbing Mt.Qomolangma disgusted me. The mountain came to represent the opposite of everything that I loved and respected about climbing. What had once been the final mountain climbing goal became the focus of a commercial guiding industry. Over the years, the crowds at Base Camp grew, leaving behind tons of trash. Whenever I was asked whether I'd climb Mt. Qomolangma, my answer was always the same： not interested. 

That was probably where my personal Mt. Qomolangma story would have ended, were it not for an old friend Thom Pollard and his obsession （迷恋） with one of the greatest mysteries. In 1999, he began to explore and found the remains of George Mallory, the celebrated British climber who disappeared while he was attempting to be the first to climb Mt. Qomolangma. But Mallory's partner, Sandy Irvine, and the camera he had likely carried, were not found. The mountain climbing world has been wondering whether they might have reached the top in 1924. 

Pollard's story moved me. I began to pack for the climb and expected that our advanced equipment would make it manageable, perhaps easy. I was wrong. On the highest point on the planet, I was more tired than I'd ever been in any climbing. Along the way, I continuously tipped my hat, not just to Mallory and Irvine but to anyone who has the drive to push himself or herself up this route. My search was in vain, but I began to reconsider Mt. Qomolangma.

I witnessed many climbers, who were much more than just self-centered tourists. We shared route information, weather forecasts, and family photos — all united around a common goal. 

I went to Mt. Qomolangma to seek Irvine. But in the end, I found something more difficult to get： the spirit that Irvine and Mallory shared. It was hiding in plain sight, right where it has always been： inside the brave souls who risk so much to follow in storied adventurers' footsteps up Mt. Qomolangma.