发布时间 : 星期五 文章福建省南安第一中学2020届高三英语上学期第二次月考试题[含答案]更新完毕开始阅读
with respect to the other, which one theory predicted would thoroughly change the material’s behaviour.
Many physicists doubted the idea. But when Cao set out to create the subtly twisted stacks, he spotted something strange. Exposed to a small electric field and cooled to 1.7 degrees above absolute zero, the graphene—which ordinarily conducts electricity—became an insulator. That by itself was surprising. But the best was yet to come: with a slight change to the field, twisted sheets became a superconductor, in which electricity flowed without resistance.
The ability to get atom-thick carbon into a complex electronic state through a simple rotation now has physicists demanding to engineer exciting behaviour in other twisted 2D materials. Some even hope that graphene could shed light on how more-complex materials superconduct at much higher temperatures. “There are so many things we can do,” says Cory Dean, a physicist at Columbia University. “The opportunities at hand now are almost irresistible.”
Hitting graphene’s “magic angle”—a rotation between parallel sheets of around 1.1o—involved some trial and error, but Cao was soon able to do it reliably. His experimental skill was extremely important, says his supervisor Jarillo-Herrero. Cao pioneered a method of tearing a single sheet of graphene so that he could create a stack of two layers, from which he could then fine-tune alignment(微调校准). Cao loves to take things apart and rebuild them. At heart, he is “a tinkerer”, his supervisor says. On his own time, this means photographing the night sky using homemade cameras and telescopes —pieces of which usually lie across Cao’s office. “Every time I go in, it’s a huge mess, with computers taken apart and pieces of telescope all over his desk,” says Jarillo-Herrero. 32. What is Cao Yuan’s achievement? A. Creating a method of piling carbon. B. Finding the superconductivity of graphene. C. Making equipment to twist graphene.
D. Starting research on a new field of physics. 33. What do we know from Cory Dean’s words?
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A. The finding can be applied to all materials.
B. It is certain that many new discoveries are on the way.
C. The discovery suggests potential for other twisted 2D materials.
D. Physicists have been pushed to find more atom-thick carbon layers. 34. What does Jarillo-Herrero think is key to Cao Yuan’s discovery? A. His method of tearing sheets.
C. His curiosity about graphene.
B. His knowledge of physics. D. His skill in experiments.
35. What can we infer about Janillo-herrero? A. He is an expert in telescope. Yuan.
C. He appreciates messy offices. research.
第二节(共5小题;每小题2分，满分10分)
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
If you travel, you will leave a carbon footprint in your wake. You can’t help it. But eco-friendly travel practices can lighten the harm on Mother Earth. Green travel is not a passing trend but a lifestyle choice. 36 .
Choosing a green destination
No destination is a Green Giant. 37 . However, some countries and cities show a deep commitment to Earth-friendly policies and practices. When researching a vacation spot, look for places that naturally embrace the green lifestyle.
Choosing green transportation
What makes Mother Earth proud? Seeing you use your own power to get around. Many adventure tour operators arrange cycling, hiking and walking holidays. 38 . The greenest rides typically run on electric power. Switzerland is taking the lead with its hybrid buses and trains powered by hydroelectricity; Japan is running close behind.
Choosing a green hotel
Once you are at your destination, if you can get the hotel right, you can make
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B. He thinks highly of Cao
D. He follows Cao Yuan’s
the greatest impact. 39 . Look for a fact sheet online, or call the front desk. You can also search for hotels approved by respected certification programs, such as Green Key and the Global Sustainable Tourism Council.
40
The Earth-friendly choices are numerous: You can sail, hike, kayak, bike, swim, bird-watch and play I-spy-a-monkey in a tree. Visit a local food market, and don’t forget to bring a reusable bag for purchases. You can also lend a hand during your holiday. The green movement has changed from how to preserve and protect to how to use less and do good when you’re there. A. Choosing green travel B. Choosing green activities C. Next in line are trains and buses D. They all make environmental missteps
E. Most major chains operate in-house green program F. If you plan to drive, consider a fuel-efficient vehicle G. Follow the tips and watch your footprints turn greener 第三部分 语言知识运用(共两节,满分45分) 第一节 (共20小题；每小题1.5分，满分30分)
阅读下面短文，从短文后各题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项。
In 2009 we were staying at our cousin’s house in Triora, Italy. Settled just above a window was a bird’s nest which my 41 said had been there for many years. Each year, different families of starlings (椋鸟)came back to make it their 42 .
We knew they were 43 because the chattering(鸣叫) of six newly hatched chicks 44 us early every morning. Standing on a chair, I 45 to look into their nest. The first time I looked, the chicks were 46 and almost featherless. Their parents 47 backwards and forwards, bringing food to 48 their hungry and noisy chicks.
Being 49 parents, whenever they saw me they screamed and flew at the window. So I could only 50 the chicks when they weren’t around.
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51 the chicks were only a few days old, I realized the parents were teaching their young to fly. One brave chick beat its wings a few times and then 52 across the street landing on the roof of the house 53 . Well done, I thought. The next day, my husband and I left for a tour and I was 54 , thinking of how I would miss the rest taking their first 55 .
Two weeks later, on our 56 , the first thing I did was look in the nest. It was 57 Then, suddenly, I heard the beating of 58 and all eight of them were flying towards me. They 59 a semicircle, singing to me. I felt as though they were saying, “Thank you for not harming us.” Then they flew off 60 into the blue sky. 41. A. husband neighbor 42. A. home
B. playground B. away
C. habitat C. back
D. garden D. abroad
B. cousin
C. guide
D.
43. A. together 44. A. called 45.A. dared 46.A. tiny 47.A. slid
B. warned B. happened
C. harmed C. managed
D. woke D. continued D. strong
B. lame C. blind C swung
B. wandered
D. flew
D.
48. A. amuse spoil
B. satisfy C. trick
49.A. protective proud 50.A. scare see
51. A. Because
B. caring C. strict D.
B. train C. catch D.
B. Although
C. When
D. If
D. fell
52. A. stepped up down
53. A. opposite 54. A. confused 55. A. shower
B. took off C. looked around
B. below
C. faraway
D. behind
B. relieved
C. sad
D. delighted
B. dive C. bite D. flight
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