【正文】 C. At a shop. D. At a bank. B Two weeks before my 12th birthday, my teacher asked me to conduct an experiment. When I mixed some powder together, they exploded. Molten liquid hit me in the face, but I felt no pain. I vividly remember standing there in a state of calm. I thought I was in a dream, but however hard I struggled to swim to the surface of consciousness, I couldn’t wake up. I didn’t understand how terrifying it was until I heard people saying, ＂ Who’s that?＂ That’s when I knew I was unrecognizable. I was taken to hospital, but the doctors didn’t know what to do with me. Later I was flown to Houston for surgery. Between the ages of 13 and 16, I had 40 operations. As each operation came and went, my vision would e back, then fade again. Eventually, it faded pletely and I had what was left of my eyes removed for cosmetic reasons. Since then, I have lived in total darkness. Most blind people, even if they don’t have any sight they’re aware of, are still able to sense light. That gives them a sense of day and night. But not me. I absolutely lost that sense of time passing. For many years, I felt my sight loss darkening my life like the loss of my parents from which I would never recover. But when I was in my 40s, I realized I had to find a way to live. I trained to bee a counselor, and that has helped me see my experiences in a different way. I can’t fix people’s broken lives — just like I can’t fix my sight — but I can help them find a way to manage. Sometimes it feels as if all the struggles and negative experiences I’ve lived through were in fact a kind of preparation for helping others to make their own way towards the light. 25. How did the writer feel when the mixed powder exploded? A. Painful. B. Frightened. C. Calm. D. Desperate. 26. What can we know about the writer? A. She recovered her sight at last. B. She just has slight sense of sight. C. She is now living a meaningful life. D. She received 40 operations in 28 years. 27. What is the passage mainly about? A. Telling her own experience. B. Encouraging the blind to cheer up. C. Calling on people to care for the blind. D. Warning students doing experiments is dangerous. C Every year, hundreds of millions of Monarch Butterflies(黑脈金斑蝶 ) from Canada and the United States journey as far as 2, 500 miles to the forests of Michoacan, Mexico, a place which has the world’s largest insect migration(遷移 ). It’s such a breathtaking sight, but as always, human greed is threatening to destroy it. The Monarch Butterflies start to arrive in Michoacan in late October to make their winter home in the trees high up in the mountains of the natural reserve. Once there, they gather together in large masses. These masses often bee so heavy that they cause tree branches to bend or even break. But there’s a purpose of all these massing — it allows the butterflies to survive in the low nighttime temperatures at these high altitudes. The Michoacan Monarch Butterfly Sanctuary is most impressive during the months of February and March, just before the winged insects begin their long journey home. Mexico’s Butterfly Forest is a shelter protected by law, and one of the country’s most popular sights, but that hasn’t stopped people from slowly but steadily destroying it. Illegal woodcutting in the heart of the Monarch Butterfly Biosphere Reserve has been a longstanding problem, but criminals are rarely brought to justice. They are often set free after paying some money. Just last month, an even greater threat rose in Michoacan’s butterfly home. The country’s largest mining corporation gained the right to reopen an old mine in the heart of the monarch reserve. Experts believe that if the mine is reopened, it will likely spell the end of this magical place. And as if all this wasn’t bad enough, the increasing use of herbicides（除草劑） in the American corn belt has led to the decrease of a plant which is essential to the monarchs’ development from egg into butterfly. 28. When do the Monarch Butterflies fly back to Canada? A. In January. B. In March. C. In October. D. In December. 29. What does the underlined word ＂ it＂ in Para