【正文】 upport the family parents did not have enough money for him 22. Why did the mother renew her membership in the league? help with her husband’s business raise money for her son meet her longfotten friends better manage her life 23. According to the text, what was the author determined to do in that autumn? get a wellpaid job for himself improve relations with his mother go to his dream university carry on with his father’s business B Disease spread in many ways. An infected person can cough or sneeze on someone nearby, or they can spread germs through a handshake. But sometimes we pick up germs indirectly. A sick person might leave behind bacteria or viruses when they touch a door handle, for example. But what if those surfaces could clean themselves? Two teenagers from Hong Kong asked themselves the same question. Now they’ve developed a door handle that can kill germs on contact. The idea is simple: Every time the door is opened, the movement creates power that starts a germkilling reaction on the handle. In lab tests, their system killed about percent of the germs that they spread onto lab dishes covered with their material. Research by others has shown that door handles in public areas are often home to lots of bacteria and viruses, notes 17yearold Sum Ming(―Simon‖) Wong. He and schoolmate Kin Pong (―Michael‖) Li,18, wanted to design a covering for door handles that would kill germs. After doing some research, they learned that a mineral called titanium dioxide is known to kill bacteria. It’s already used in many products, from paints to desserts. To make their covering, the teenagers made the mineral into a very fine powder. Titanium dioxide kills bacteria best when lit by ultraviolet light, says Simon. UV light is found in sunlight. But UV light does not naturally shine on indoor handles or any used at night, so the teenagers light their door handle from within. To make sure the light reaches the coated surface, the teenagers made their door handle out of clear glass, Each end fits into a bracket (托架 ). Inside one of the brackets is a strong lightemitting diode(LED). From it es UV light. And here’s the interesting part: The power that makes the UV light shine es from opening and closing the door. The power from the door is then carried by wire to the LED inside the door handle. The door handle system, Michael and Simon say, might cost no more than about $13 (about 81 yuan) to build. 24. The ways diseases spread are mentioned at the beginning of the text to ________. A. demonstrate how most diseases are spread indirectly B. remind readers of the importance of cleaning their hands C. explain how to kill bacteria or viruses effectively D. help to describe a new invention that prevents diseases from spreading 25. Michael and Simon’s door handle __________. A. is too expensive for ordinary families B. is powered by the movement of its users C. works better at night than in the daytime D. is made of a metal that can take in UV light 26. The LED is placed inside the brackets to _______. A. supply enough power to the handle system B. produce titanium dioxide to kill bacteria C. provide UV light to help titanium dioxide work better D. direct the UV light in sunlight to the coated surface 27. What is the author’s attitude toward Michael and Simon’s door handle system? A. Cautious B. Critical C. Enthusiastic D. Disappointed C For as long as I can remember, I have had a friend through a friend of my mother’s. My mom and her mom met through a skiing group for people with disabilities. I am disabled, and her mother is disabled. We lived about 45 miles away from each other and so we didn’t grow up together, but we spent as much time together as possible. Often we spent the night at each other’s house and, of course, we went on ski trips together with our mothers. We even went to summer camps together. This was often a challenge, being that she was ablebodied and I was not.. A lot of times there were activities I just couldn’t keep up with, or sometimes wasn’t able to participate at all. A couple of summers, I also tried attending summer camps for kids with disabilities. While I had a disability, it was pretty mild pared to most of the kids at these types of camps. However, sometimes I was left terribly bored with not enough physical activity for me. One year, this friend of mine and I s