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 "food" that lasts years on end, 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.
1.What benefit does 3D printing bring to food production?
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.
2.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.
3.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
4.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.
5.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
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 turn it into a museum upon her death. On a sunny Saturday, Sally and I drove over to the museum. She asked, "Do you have the address? ""No, but I'll recognize it, there was a picture in the magazine. "
"Oh, stop. There it is!”
The museum was free. We entered, excited. A group of people sitting in the hall stopped talking and stared at us.
"May I help you?" a man asked. "No, "I said. "We're fine.” 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. "Where do you think you are? " he asked. I turned sharply. "The McNay Art Museum!" He smiled, shaking his head. "Sorry, the McNay is on New Braunfels Street." "What’s this place?” I asked, still confused. "Well, it's our home." My heart jolted(震颤). I raced to the staircase and called out, "Sally! Come down immediately! "
"There's 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, "Sorry, please forgive us, you have a really nice place." Outside, 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.
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. "Excuse me, did you ever enter a residence, long ago, thinking it was the McNay Museum?"
"Yes. But how do you know? We never told anyone."
"That 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."
1.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.
2.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.
3.How did the author feel about being stared at by the people in the hall?
A. Puzzled. B. Concerned.
C. Frightened. D. Delighted.
4.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.
5.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.
D. People tend to educate teenagers at a museum.
Fire Prevention Information
The University of Adelaide employs a full-time staff of fire prevention professionals. They inspect all campus buildings and test and maintain all sprinkler(喷水灭火装置）systems fire alarms and fire extinguishers (灭火器). They also provide educational programs on fire safety in the residence hall. Whenever you move to a new area, you should locate the fire alarm pull stations and the two exits nearest your room.
Fire Alarms
The floors of all campus buildings are equipped with manual(手动的）fire alarm systems which include fire alarm pull stations and pipes. Most are also equipped with automatic fire alarm systems consisting of heat detectors, smoke detectors and sprinklers. For your safety, never tamper with(胡乱摆弄）these systems. False fire alarms are illegal and may lead to imprisonment.
Fire Drills
A fire drill will be conducted in your residence hall every semester. During a fire drill, please do the following:
·Take your room key and ID, close and lock the door to your room.
·Exit immediately from the nearest emergency exit do not use a lift.
·Meet outside of your residence hall and wait for further instructions.
Fire Extinguishers
Fire extinguishers are located on each floor and in each apartment. Use a fire extinguisher only if you have been trained to do so. Irresponsible use of a fire extinguisher can create a dangerous situation for other residents and could result in damage to personal property.
Misuse of a fire extinguisher will result in fines.
Smoke Detector
A smoke detector is on the ceiling in your room. Some buildings also have heat detectors on the ceilings. Do the following to ensure the safe operation of your smoke detector:
·If your smoke detector is working properly, the red light should be on. If the red light is not blinking（闪动），contact residence hall staff immediately.
·Do not cover or block your smoke detector in any way.
·If a smoke detector sets off an alarm and there is no fire or smoke, inform your hall staff.
1.What is the main duty of the fire prevention professionals?
A. To provide part-time jobs for students.
B. To lead the students to the nearest exits.
C. To check and maintain fire prevention equipment.
D. To train teachers to be fire prevention professionals.
2.What do the automatic fire alarm systems include?
A. Pipes and smoke detectors.
B. Smoke detectors and sprinklers.
C. Fire alarm pull stations and pipes.
D. Sprinklers and fire alarm pull stations
3.In a fire drill, the students should ________.
A. rush quickly to a lift
B. gather at the nearest exit.
C. shut the door and leave at once
D. wait for instructions in the hall
4.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.
5.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
No one is born a winner. People make themselves into winners by their own _______
I learned this lesson from a(n) _______ many years ago. I took the head _______job at a school in Baxley, Georgia. It was a small school with a weak football program.
It was a tradition for the school's old team to play against the _______ team at the end of spring practice. The old team had no coach, and they didn't even practice to _________the game. Being the coach of the new team, I was excited because I knew we were going to win, but to my disappointment we were defeated. I couldn't _______ I had got into such a situation. Thinking hard about it, I came to _______ that my team might not be the number one team in Georgia, but they were _________me. I had to change my _______about their ability and potential.
I started doing anything I could to help them build a little ________. Most important, I began to treat them like ________. That summer, when the other teams enjoyed their ________, we met every day and __________passing and kicking the football.
Six months after suffering our __________on the spring practice field, we won our first game and our second, and continued to ________. Finally, we faced the number one team in the state. I felt that it would be a ________for us even if we lost the game. But that wasn't what happened. My boys beat the best team in Georgia, giving me one of the greatest ________of my life！
From the experience I learnt a lot about how the attitude of the leader can ________ the members of a team. Instead of seeing my boys as losers, I pushed and__________them. I helped them to see themselves ________, and they built themselves into winners.
Winners are made, but born.
1.A. luck B. tests C. efforts D. nature
2.A. experiment B. experience C. visit D. show
3.A. operating B. editing C. consulting D. coaching
4.A. successful B. excellent C. strong D. new
5.A. cheer for B. prepare for C. help with D. finish with
6.A. believe B. agree C. describe D. regret
7.A. realize B. claim C. permit D. demand
8.A. reacting to B. looking for C. depending on D. caring about
9.A. decision B. attitude C. conclusion D. intention
10.A. pride B. culture C. fortune D. relationship
11.A. leaders B. partners C. winners D. learners
12.A. rewards B. vacations C. health D. honor
13.A. risked B. missed C. considered D. practiced
14.A. defeat B. decline C. accident D. mistake
15.A. relax B. improve C. expand D. defend
16.A. shame B. burden C. victory D. favor
17.A. chances B. thrills C. concerns D. offers
18.A. surprise B. serve C. interest D. affect
19.A. encouraged B. observed C. protected D. impressed
20.A. honestly B. individually C. calmly D. differently
If we ___________the flight yesterday, we would be enjoying our holiday on the beach
A. had caught B. caught
C. have caught D. would catch
It was only when the car pulled up in front of our house ___________we saw Lily in the passenger seat.
A. which B. that
C. when D. where
