39.What do we know about the use of fire extinguishers? A. Using them wrongly results in punishment. B. Irresponsible use of them can damage them. C. Improper use of them can destroy the apartment. D. Using them without a trainer present is forbidden.
40.To ensure the safe operation of the smoke detector, one should_________. A. contact the hall staff regularly B. cover the things that burn easily C. start the smoke detector in a fire D. make certain the red light is working
B
When I was 17, I read a magazine article about a museum called the McNay, once the home of a watercolorist named Marian McNay. She had requested the community to tum it into a museum upon her death. On a sunny Saturday, Sally and I drove over to the museum. She asked, \there was a picture in the magazine. \
\There it is!”
[来源学§科§网]
The museum was free. We entered, excited. A group of people sitting in the hall stopped talking and stared at us.
\\ Tour guides got on my nerves. What if they talked a long time about a painting you weren't that interested in? Sally had gone upstairs. The people in the hall seemed very nosy(爱窥探的), keeping their eyes on me with curiosity. What was their problem? I saw some nice sculptures in one room. Suddenly I sensed a man standing behind me. \do you think you are? \he asked. I turned sharply. \\ still confused. \震颤). I raced to the staircase and called out, \
\some really good stuff(艺术作品）up there.\She stepped down, looking confused. I pushed her toward the front door, waving at the family, saying, \when I told Sally what happened, she covered her mouth, laughing. She couldn't believe how long they let us look around without saying anything.
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The real McNay was splendid, but we felt nervous the whole time we were there. Van Gogh, Picasso. This time, we stayed together, in case anything else unusual happened.
Thirty years later, a woman approached me in a public place. \ago, thinking it was the McNay Museum? \
\
\was my home. I was a teenager sitting in the hall. Before you came over, I never realized what a beautiful place I lived in. I never felt lucky before. You thought it was a museum. My feelings about my home changed after that. I've always wanted to thank you.\41. What do we know about Marian McNay? A. She was a painter.
B. She was a community leader. C. She was a museum director. D. She was a journalist.
42. Why did the author refuse the help from the man in the house? A. She disliked people who were nosy. B. She felt nervous when talking to strangers. C. She knew more about art than the man. D. She mistook him for a tour guide.
43. How did the author feel about being stared at by the people in the hall? A. Puzzled.
B. Concerned.
C. Frightened.
D. Delighted.
44. Why did the author describe the real McNay museum in just a few words? A. The real museum lacked enough artwork to interest her. B. She was too upset to spend much time at the real museum. C. The McNay was disappointing compared with the house. D. The event happening in the house was more significant. 45. What could we learn from the last paragraph? A. People should have good taste to enjoy life. B. People should spend more time with their family. C. People tend to be blind to the beauty around them.
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D. People tend to educate teenagers at a museum.
C
There’s a new frontier in 3D printing that’s beginning to come into focus: food. Recent development has made possible machines that print, cook, and serve foods on a mass scale. And the industry isn’t stopping there. Food production
With a 3D printer, a cook can print complicated chocolate sculptures and beautiful pieces for decoration on a wedding cake. Not everybody can do that — it takes years of experience, but a printer makes it easy. A restaurant in Spain uses a Foodini to “re-create forms and pieces” of food that are “exactly the same,” freeing cooks to complete other tasks. In another restaurant, all of the dishes and desserts it serves are 3D-printed,rather than farm to table. Sustainability(可持续性）
The global population is expected to grow to 9.6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels. Sustainability is becoming a necessity. 3D food printing could probably contribute to the solution. Some experts believe printers could use hydrocolloids (水解胶体) from plentiful renewables like algae(藻类) and grass to replace the familiar ingredients(烹饪原料). 3D printing can reduce fuel use and emissions. Grocery stores of the future might stock \freeing up shelf space and reducing transportation and storage requirements. Nutrition
Future 3D food printers could make processed food healthier. Hod Lipson, a professor at Columbia University, said, “Food printing could allow consumers to print food with customized nutritional content, like vitamins. So instead of eating a piece of yesterday’s bread from the supermarket, you’d eat something baked just for you on demand.” Challenges
Despite recent advancements in 3D food printing, the industry has many challenges to overcome. Currently, most ingredients must be changed to a paste(糊状物) before a printer can use them, and the printing process is quite time-consuming, because ingredients interact with each other in very complex ways. On top of that, most of the 3D food printers now are restricted to dry ingredients, because meat and milk products may easily go bad. Some experts are skeptical about 3D food printers, believing they are better suited for fast food restaurants than homes and high-end restaurants.
46. What benefit does 3D printing bring to food production?
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A. It helps cooks to create new dishes. B. It saves time and effort in cooking. C. It improves the cooking conditions. D. It contributes to restaurant decorations.
47. What can we learn about 3D food printing from Paragraphs 3? A. It solves food shortages easily. B. It quickens the transportation of food. C. It needs no space for the storage of food. D. It uses renewable materials as sources of food.
48. According to Paragraph 4, 3D-printed food _____________. A. is more available to consumers B. can meet individual nutritional needs C. is more tasty than food in supermarkets D. can keep all the nutrition in raw materials
49. What is the main factor that prevents 3D food printing from spreading widely? A. The printing process is complicated. B. 3D food printers are too expensive. C. Food materials have to be dry. D. Some experts doubt 3D food printing. 50. What could be the best title of the passage? A. 3D Food Printing: Delicious New Technology B. A New Way to Improve 3D Food Printing C. The Challenges for 3D Food Production D. 3D Food Printing: From Farm to Table
D
Give yourself a test. Which way is the wind blowing? How many kinds of wildflowers can be seen from your front door? If your awareness is as sharp as it could be, you’ll have no trouble answering these questions.
Most of us observed much more as children than we do as adults. A child’s day is filled with fascination, newness and wonder. Curiosity gave us all a natural awareness. But distinctions that were sharp to us as children
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become unclear; we are numb(麻木的）to new stimulation(刺激), new ideas. Relearning the art of seeing the world around us is quite simple, although it takes practice and requires breaking some bad habits.
The first step in awakening senses is to stop predicting what we are going to see and feel before it occurs. This blocks awareness. One chilly night when I was hiking in the Rocky Mountains with some students, I mentioned that we were going to cross a mountain stream. The students began complaining about how cold it would be. We reached the stream, and they unwillingly walked ahead. They were almost knee-deep when they realized it was a hot spring. Later they all admitted they’d felt cold water at first.
Another block to awareness is the obsession(痴迷) many of us have with naming things. I saw bird watchers who spotted a bird, immediately looked it up in field guides, and said, a \ it off. They no longer paid attention to the bird and never learned what it was doing.
The pressures of \and \are further blocks to awareness. I encountered many hikers who were headed to a distant camp-ground with just enough time to get there before dark. It seldom occurred to them to wander a bit, to take a moment to see what’s around them. I asked them what they’d seen. \said. They seemed bent on their destinations.
Nature seems to unfold to people who watch and wait. Next time you take a walk, no matter where it is, take in all the sights, sounds and sensations. Wander in this frame of mind and you will open a new dimension to your life.z.xxk
51. According to Paragraph 2, compared with adults, children are more ____________.
A. anxious to do wonders B. sensitive to others’ feelings C. likely to develop unpleasant habits D. eager to explore the world around them 52. What idea does the author convey in Paragraph 3?
A. To avoid jumping to conclusions. B. To stop complaining all the time. C. To follow the teacher’s advice. D. To admit mistakes honestly.
53. The bird watchers’ behavior shows that they __________.
A. are very patient in their observation
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