3D printing is becoming more and more popular. We are now able to create things we need very quickly and easily using 3D printers. But can you imagine printing food?
Some scientists are trying to revolutionize the dining experience by doing this. They hope that having a 3D printer in the kitchen will be as common as the microwave oven or blender.
Scientists say that it’ll be quite easy: you simply have to select a recipe and put the raw food ‘inks’ into the printer. You can also modify the instructions to make the food exactly how you want it. This means that it would be very quick and easy to create tasty and nutritious meals.
Using 3D printers to create your meals would also be saving the environment. There would be less need for traditional growing, transporting and packaging processes as food production would be a lot more efficient. For example, alternative ingredients (原料) such as proteins from algae, beetroot leaves and insects could be converted into tasty products.
Printing food could also help people who suffer from dysphasia (a swallowing disorder). They could program the printer to print softer versions of their favorite foods so that they would not have trouble in swallowing them.
However, some people think that a future of 3D food printing would be a disaster. It could take away many jobs, including those from growing, transporting and packaging food. Imagine a world where there was no need for farming or growing crops and the same tastes could be printed from a raw “food ink”. Likewise, traditional cafes and restaurants might lose business. Also, there are concerns about the nutritional value of printed food: is it really possible to be get the nutrients we need from food-based inks and gels (凝胶)?
What’s more, cooking and eating together with family and friends has long been a traditional and enjoyable activity. It is hard to imagine a world where the pleasure of cooking is dead and meals can be created at the touch of a button.
1.Which of the following best describes 3D food printing?
A.Quick and popular. B.Easy and efficient. C.Nutritious and tasty. D.Soft and convenient.
2.Why do some think that 3D food printing would be a disaster?
A.Traditional food would disappear. B.Many people could lose their jobs.
C.It would affect the people’s health. D.We could all eat the same food.
3.What can we infer from the last paragraph?
A.3D food printing will replace traditional cooking. B.The future of 3D food printing is uncertain.
C.It would hurt our tradition of food culture. D.3D food printing would be a failure.
Over a hundred years ago in 1911, something strange was found in the glaciers of Antarctica. Grilffith Taylor—an Australian geologist, had discovered a blood red steam pouring out of the ice cascades（瀑布）of Talor Glacier! Popularly known as the Blood Falls, scientists had not been able to find the reason behind the blood red liquid flowing through the ice---until recently. The mystery of the Blood Falls had finally been solved.
When these falls were first discovered, scientists had believed that the red colour came from a large amount of red algae（海藻）concentrated in the water. Red algae contain a pigment（色素）which reflects red light, making the algae appear red.
This theory made sense, until it was later found that algae do not play a part in the red color of the flowing liquid at all. What really causes Talor Glacier’s waters appear blood red, is the presence of iron oxide in the liquid. The waters of the blood falls are rich in salt and iron content, and when this water comes in contact with the air, it turns red—just like rust! The water in these falls is often referred to as “brine” by scientists because of the high salt content in the water.
This reasoning behind the red colors of the falls was found back in 2003. However, the entire mystery had not yet been solved. How is it then, that the Blood Falls are not frozen?
Researchers at the University of Colorado and University of Alaska found that inside the glacier, there was a network of channels and reservoirs that move the water around. Salt water has a lower freezing temperature. In addition, when any substance undergoes a change in state, it gives off heat. Therefore, the brine actually warm itself up while it’s freezing! How this works, is that when the brine is flowing through the Talor Glacier, some of it does freeze. As a result of changing state from liquid to ice, the brine gives off heat. This heat is enough to keep the rest of the rest of the brine in liquid form, which is why it flows out of the glacier.
Incredible new chemistry facts found, any mystery solved!
1.According to the text, the red algae theory was once considered ________.
A.ridiculous B.reasonable
C.impractical D.complex
2.Why does the Blood Falls look red in colour?
A.Because there is too much salt and iron in its water.
B.Because its liquid is rich in red algae.
C.Because the following liquid reflects and sunlight
D.Because the air is thin and rare in Antarctica.
3.What is the main reason for the Blood Fall’s not freezing?
A.The water continued flowing constantly.
B.There is too much salt in the water.
C.The brine gives off heat while freezing
D.Temperatures aren’t high enough for flowing water.
4.What is the passage mainly about?
A.The discovery of the blood glacier.
B.The birth of the Talor Glacier.
C.The flowing red water in Antarctica.
D.The mystery of the Blood Falls.
Humans and gorillas shared evolution for 23 million years. Their paths separated only six million years ago. Research on how gorillas communicate can help us understand human language development.
Understanding how the brain works helps us see a connection between language development and non-verbal signs. These signs or movements include things like the way we move our hands or bodies or the different expressions our faces have in different social situations. A new study on gorillas showed that the right side of the body is controlled by the left part of the brain and it is also the location for language development.
Two cameras were used to film all of one ape’s movements. One of the first results was that gorillas use their right hands more when they are doing actions with their heads or mouths at the same time. This shows that there is a connection between how our brain works and the reason we use one side of our body more than the other. In addition, we can use the results of the study and our knowledge about brains to help us understand more about how language first developed in humans.
Dr Forrester, who did the study, says the results can be useful in other ways, such as understanding language development in children. For example, some children have serious illness called “autism” which can stop them communicating normally with people. It might be possible to use the same study method to find out which children have this illness when they are very young. Doctors will then be able to start treatment early.
1.Which of the following may have a connection with right-handedness?
A.Communication. B.Intelligence.
C.Social position. D.Social success.
2.What does the underlined word “it” refer to?
A.The right side of the body. B.The mouth.
C.The left part of the brain. D.The front part of the head.
3.Who might benefit most from the results of the study?
A.Photographers of gorillas. B.Zoo keepers.
C.Researchers on movement. D.Children with illness.
4.We can infer from the text that gorillas ___________.
A.prefer to use the right hand instead of the left hand
B.have a complex form of non-verbal communication
C.help us better develop our language abilities
D.share the same body language with humans
The Nobel Prize Winners in Literature
Rabindranath Tagore( 1913)
Prize motivation: "because of his deep sensitive, fresh and beautiful poetry, with perfect skill, he has made his poetic thought, expressed in his own English words, a part of the literature of the West"
William Faulkner (1949)
Prize motivation: "for his powerful and artistically unique contribution to the modern American novel"
Ernest Miller Hemingway(1954)
Prize motivation: "for his mastery of the art of narrative, most recently demonstrated in The Old Man and the Sea"
John Steinbeck (1962)
Prize motivation: "for his realistic and imaginative writings, combining as they do sympathetic humour and keen social perception"
Sir Winston Leonard Spencer Churchill(1953)
Prize motivation: "for his mastery of historical and biographical description as well as for brilliant speech skills in defending noble human values"
Claude Simon (1985)
Prize motivation: "who in his novel combines the poet's and the painter's creativeness with a deepened awareness of time in the description of the human condition"
Mo Yan (2012)
Prize motivation: “he, with dreamlike realism, combines folk tales, history and the contemporary".
Bob Dylan (2016)
Prize motivation: "for having created new poetic expressions within the great American song tradition"
1.Which writer won Nobel Prize for his poetry?
A.William Faulkner. B.Bob Dylan.
C.Rabindranath Tagore. D.Claude Simon.
2.Which writer won Noble Prize for his specific work instead of his lifelong achievements?
A.Ernest Hemingway. B.John Steinbeck.
C.William Faulkner. D.Winston Churchill.
3.Whose works will you turn to if you are interested in a song writing Nobel Prize winner?
A.Mo Yan’s. B.Bob Dylun’s.
C.Claude Simon’s. D.Rabindranath Tagore’s.
4.Who described real life experience in his historic works?
A.John Steinbeck. B.Mo Yan.
C.Ernest Hemingway. D.Winston Churchill.
听下面一段独白，回答以下小题。
1.What is true about the Great American Beer Festival?
A.It’s the oldest beer festival in America.
B.It’s the cheapest beer festival in the world.
C.It’s the largest beer festival in America.
2.How many companies will attend the festival?
A.Tens of thousands. B.Hundreds. C.Thousands.
3.According to the talk, what is Sticky Fingers?
A.An American beer. B.An organic cheese. C.The name of a beer company.
4.How old are people allowed to enter?
A.18. B.20. C.21.
听下面一段较长对话，回答以下小题。
1.How did the woman get the computer?
A.She ordered it. B.She borrowed it. C.It was a gift.
2.What surprises the man about the computer?
A.The size. B.The price. C.The color.
3.What did the woman do in the café today?
A.She talked with a friend.
B.She worked on her résumé.
C.She looked for a job there.
4.How does the woman feel about noisy cafés?
A.She dislikes the noise. B.She ignores the noise. C.She is inspired by the noise.
