3 . Have you ever tried living a whole day without cash? With a smart phone, it is easy for ordinary people to do so in most parts of China, even when public transportation is involved. In fact, China’s mobile payment apps are expanding their reaches in the global market as internet giants like Alibaba and Tencent seek to promote their e-payment tools overseas.

While Wechat Pay has been used in twenty countries and regions including Japan and the Republic of Korea, Alipay offers payment choices for shopping, transport and sightseeing in thirty-eight countries and regions. Wechat can deal with transactions（交易）in thirteen currencies, while Alipay supports settlements in twenty-seven currencies. Consumers in altogether twenty-four countries can get their tax refunds through Alipay, and the app is available in more than sixty overseas airports to offer various services. Besides promoting apps overseas, Alibaba’s Ant Financial has partnered with India’s PayTM since 2015 to help the latter build a local mobile payment platform and control risks.

What is certain is that the growth of China’s mobile payment is driven by improved Internet facilities, technological innovation（变革）as well as a friendly business environment. After successes in online shopping, mobile payments expanded into stores and restaurants in and outside China. The trend has made China the world’s largest mobile payment market.

4 . What will people die of 100 years from now? If you think that is not a simple question, you have not been paying attention to the revolution that is taking place in biotechnology(生物技术). With the help of new medicine, the human body will last a very long time. Death will come mainly from accidents, murder and war. Today's leading killers, such as heart disease, cancer, and aging itself, will become distant memories.

In discussion of technological changes, the Internet gets most of the attention these days. But the change in medicine can be the real technological event of our times. How long can humans live?Human brains were known to decide the final death. Cells are the basic units of all living things, and until recently, scientists were sure that the life of cells could not go much beyond 120 years because the basic materials of cells, such as those of brain cells, would not last forever. But the upper limits will be broken by new medicine. Sometime between 2050 and 2100, medicine will have advanced to the point at which every 10 years or so, people will be able to take medicine to repair their organs. The medicine, made up of the basic building materials of life, will build new brain cells, heart cells, and so on－in much the same way our bodies make new skin cells to take the place of old ones.

It is exciting to imaging that the advance in technology may be changing the most basic condition of human existence, but many technical problems still must be cleared up on the way to this wonderful future.

5 . About a year ago, I had to spend a week in a hospital on account of the deadly food poisoning. There I met an elderly woman, who ________ to be a professional musician. That time when I met her, the idea of learning to sing didn't ________ my mind. I thought it was something unavailable and not ________ for me, like being an airplane pilot.

And only recently, I suddenly decided to learn singing. I was ________ with my dog in the woods early in the morning, singing ________ to myself and it made me feel so wonderful. At that moment I ________ I had known more good songs and how to control my ________ better. And then I thought, why didn't I take some singing lessons? Of course, it was not a (n) ________ skill that I could use at work, but not everything in this life is about actual ________ and income.

It was easy to find that woman. I remembered her name and there was only one ________ college in our city. I was ________ she would reject me because l was a terrible ________. But she took my request very ________. She understood how important music was ________ one's soul. In my first lesson, she sat at the gorgeous big piano and ________ some rising notes that I had to repeat. At first I was terrified to   ________ because I feared being judged and criticized. But my teacher was kind and professional. ________, she was strict when she knew I could do better.

Learning to sing was like learning to walk. It was like ________ that all your life you had some superpower but were not aware of its ________. Singing taught me more than just being able to take some high or low ________. Most importantly, it taught me to be braver about expressing myself and my opinions.

7 . William Kamkwamba lives in Malawi, Africa, where most people have to grow their own food and have no electricity or running water. In 2001, when he was 14 years old, there was a terrible drought(干旱) and most families, including William’s, couldn’t grow enough food.

Because of the drought, William’s family couldn’t afford to send him to school anymore. So one day, William went to the library near his home to study. He found a science book called Using Energy, which included instructions for building a windmill(风车). Windmills are good sources of electricity, and they can bring water up from underground. William didn’t know much English, and he wasn’t able to understand most of the book, but it was full of pictures. Looking at the pictures, William thought he could build a windmill for his family.

When William started building his windmill, a lot of people laughed at him, including his mother. But William saw the photo of the windmill in the book. That meant someone else was able to build it, so he knew he could build it, too. He didn’t have the parts and equipment that he saw in the book’s pictures. So he looked for parts in junkyards to build his machine.

William changed his design little by little. First, the windmill powered only one light bulb(灯泡). Finally, it powered four lights. Then there was enough electricity for four lights and a radio. No one laughed at William after that, and people in his town started to come to his house to get power for their cell phones. Later, William built a second windmill. This one brought water up from underground. After that, William began to teach other people how to build windmills.

Now he uses his website, movingwindmills.org, to educate and give hope to people. His main message is this: “To the Africans and the poor who are striving for your dreams, trust yourself and believe. Whatever happens, don’t give up.”

10 . I had watched our new refrigerator being delivered, and then I did what any child would do with a huge box - turning it into something wonderful. In my case, it was a _______ where I was going to help people.

Over the next few days, I readily _______ everyone I saw. Our dogs and cats, along with Grandma, made up the majority of my _______.

My box room _______ pretty quickly after that, but the dream stayed. _______, it went into sleep for a while. After graduating from high school, I couldn’t _______ to go to university. So I decided to work and take _______ classes instead.

Though years passed, my _______ didn’t. As I worked job after job, I always managed to set aside _______ time and money to take college classes at night. Over time, I received my first college ________. As my regular jobs ________, so did the amount of effort and funds I could spend on my university classes. Before I knew it, another college degree had been ________. And so it went, after working for years and ________ every part of education, I acquired my eighth and final degree. I ________ became a doctor as I had wished.

________ is a joyful lifelong process, and I managed to reach my goal over the years by taking one class at a time.