I had to knock on the taxi to get his attention. Finally, the driver, a man about 60, looked up from behind the wheel and apologized, “I'm sorry, but I was reading a letter.” He sounded as if he had a cold or a cough.

    Since I was in no hurry, I told him to finish his letter. He shook his head, explaining that he had already read it several times and almost knew it by heart. Curious, I asked whether it was from a child or maybe a grandchild. “This isn't family,” he replied. “though he might just as well have been a regular member of the family. Old Ed and I grew up together.”

    They were always friends. But since he moved away from the neighborhood 30 years ago, it'd generally just been postcards at Christmas time between them. A couple of weeks ago, Ed died. “I should have kept in touch.” He repeated this, more to himself than to me. To comfort him, I said sometimes we just didn't seem to find the time. “But we used to find the time,” he said. “Take a look.” He handed the letter over to me.

    The first sentence “I've been meaning to write for some time, but I've always delayed it.” reminded me of myself. It went on to say that he often thought about the good times they had had together. When I read the part where it said “Your friendship really means a lot to me, more than I can say because I'm not good at saying things like that”, I found myself nodding in agreement.

    We had gone several kilometers and were almost at my hotel, so I read the last paragraph: “So I thought you'd like to know that I was thinking of you.” And it was ended with “Your Old Friend, Tom.”

    “I thought your friend's name was Ed,” I said.

    “I'm Tom,” he explained. “It's a letter I wrote to Ed before I knew he'd died. I never put it in the mailbox. I guess I should have written it sooner.” His face was pale as he wiped his eyes with a handkerchief.

    When I got to my hotel room I didn't unpack right away. I had to write a letter and post it.

根据短文内容，选择最佳答案，并将选定答案的字母标号填在题前括号内。

    Do you want to get home from work knowing you have made a real difference in someone's life?

    If yes, don't care about sex or age! Come and join us, then you'll make it!

Position: Volunteer Social Care Assistant

(No Pay with Free Meals)

Place: Manchester

Hours: Part Time

    We are now looking for volunteers to support people with learning disabilities to live active lives! Only 4 days left. Don't miss the chance of lending your warm hands to help others!

Role:

    You will provide people with learning disabilities with all aspects of their daily lives. You will help them to develop new skills. You will help them to protect their rights and their safety. But your primary concern is to let them know they are valued.

Skills and Experience Required:

    You will have the right values and great listening skills. You will be honest and patient. You will have the ability to drive a car and to communicate in fluent written and spoken English since you'll have to help those people with different learning disabilities. Previous care-related experience will be a great advantage for you.

    Top Sites to See in New York

    Central Park

    For more than 150 years, visitors have come to Central Park's 843 green acres in the heart of Manhattan. Since 1980, the Park has been managed by the Central Park Conservancy, in partnership with the public. You can visit the official website of Central Park to learn more about Park happenings and activities and to learn how to help Central Park.

    Telephone: 212-310-6600

    Location: 59th to 110th Street, Manhattan Borough, from Central Park West to 5th Avenue, New York City,                 NY10022

    Open Hours: 06: 00-23:00

    The National 9/11 Memorial Museum

    The national 9/11 Memorial & Museum is a place of remembrance honoring those who lost their lives in the terrorist attacks of September 11,2001. The 9/11 Memorial Museum displays Monumental artifacts linked to the events of 9/11, while presenting stories of loss, sympathy and recovery that are central to telling the story of the 2001 attacks and the consequence. It also explores the global impact of 9/11 and its continuing significance.

    Telephone: 212-312-8800

    Location: 180 Greenwich St, World Trade Center, New York City, NY 10007

    Open Hours: 09: 00-20: 00

    The Metropolitan Museum of Art

    At New York City's most visited museum and attraction, you will experience over 5,000 years of art from around the world. The Met is for anyone as a source of inspiration, insight and understanding. You can learn, escape, play, dream, discover and connect.

    Telephone: 212-535-7710

    Location: 1000 5th Avenue, New York City, NY 10028-0198

    Open Hours: 10: 00-17: 30

    Imagine, one day, getting out of bed in Beijing and being at your office in Shanghai in only a couple of hours, and then, after a full day of work, going back home to Beijing and having dinner there.

    Sounds unusual, doesn't it? But it's not that unrealistic, with the development of China's high-speed railway system. And that's not all. China has an even greater high-speed railway plan to connect the country with Southeast Asia, and eventually Eastern Europe. China is negotiating to extend its own high-speed railway network to up to 17 countries in 10 to 15 years, eventually reaching London and Singapore.

    China has proposed three such projects. The first would possibly connect Kunming with Singapore via Vietnam and Malaysia. Another could start in Urumqi and go through Kazakhstan and Uzbekistan, and possibly to Germany. The third would start in the northeast and go north through Russia and then into Western Europe. The new system would still follow China's high-speed railway standard. And the trains would be able to go 346 kilometers an hour, almost as fast as some airplanes. Of course, there are some technical challenges to overcome. There are so many issues that need to be settled, such as safety, rail gauge(轨距), maintenance of railway tracks. But the key issue is really money. China is already spending hundreds of billions of yuan on domestic railway expansion.

    China prefers that the other countries pay in natural resources rather than with capital investment. Resources from those countries could stream into China to sustain development. It'll be a win-win project. For other countries, the railway network will definitely create more opportunities for business, tourism and so on, not to mention the better communication among those countries.

    For China, such a project would not only connect it with the rest of Asia and bring some much-needed resources, but would also help develop China's far west. We foresee that in the coming decades, millions of people will migrate to the western regions, where the land is empty and resources unused. With high-speed trains, people will set up factories and business centers in the west once and for all. And they'll trade with Central Asian and Eastern European countries.

    I was now in my twenty-third year of residence in this island and was so naturalized to the place and to the manner of living that I finally enjoyed the certainty that no savagesc(野人) would come to the place to disturb me, and that I could have been content to spend the rest of my time there, even to the last moment, till I had laid me down and died, like the old goat in the cave.

    I had also arrived to some little recreations and amusements, which made the time pass more pleasantly with me a great deal than it did before.

    At first, I had taught my Poll to speak. And he did it so familiarly and talked so clearly and plainly that it was very pleasant to me. And he lived with me no less than six years. How long he might live afterwards, I don't know; though I know people have an idea in Brazil that they live a hundred years. Perhaps poor Poll may be alive there still, calling Poor Robin Crusoe to this day. I wish no other English man the ill luck to come there and hear him. But if he did, he would certainly believe it was the devil.

    My dog was a very pleasant and loving companion to me, for no less than sixteen years of my time, and then died of mere old age.

    As for my cats, they multiplied to that degree that I had to shoot several of them at first to keep them from eating up all I had.

    Besides these, I had two more parrots which talked pretty well and would all call Robin Crusoe, but neither like my first. Nor indeed did I take the pains with any of them that I had done with him. I had also several tame sea-fowls, whose names I don't know, who I caught upon the shore and cut their wings and the little stakes which I had planted before my castle wall being now grown up to a good thick bush; these fowls all lived among these low trees and bred there, which was very agreeable to me; so that as I said above, I began to be very well contented with the life I led, if it might have been secured from the threat of the savages.

    Why elephants rarely get cancer is a mystery that has confused scientists for decades. A study was led by researchers at Huntsman Cancer Institute (HCI) at the University of Utah and Arizona State University, including researchers from the Ringling Bros. Center for Elephant Conservation may have found the answer. According to the results, elephants have 38 additional modified copies of a gene (基因) that encodes p53, a well-defined tumor (肿瘤) suppressor, as compared to humans, who have only two. Further, elephants may have a more powerful mechanism for killing damaged cells that are at risk for becoming cancerous. In isolated elephant cells, this activity is doubled compared to healthy human cells, and five times that of cells from patients with Li-Fraumeni Syndrome, who have only one working copy of p53 and more than a 90 percent lifetime cancer risk in children and adults. The results suggest extra p53 could explain elephants' increased resistance to cancer.

    "Nature has already figured out how to prevent cancer. It's up to us to learn how different animals overcome the problem so we can adapt those strategies to prevent cancer in people," says co-senior author Joshua Schiffman, M.D., pediatric oncologist (肿瘤学家) at Huntsman Cancer Institute, University of Utah School of Medicine, and Primary Children's Hospital.

    According to Schiffman, elephants have long been considered a walking problem. Because they have 100 times as many cells as people, they should be 100 times more likely to have a cell slip into a cancerous state and cause the disease over their long life span of 50 to 70 years. And yet it's believed that elephants get cancer less often, a theory confirmed in this study. Analysis of a large database of elephant deaths estimates a cancer death rate of less than 5 percent compared to 11 to 25 percent in people.