1.阅读理解

It is a phenomenon known as the "first-night" effect that people often experience trouble sleeping in a different bed in unfamiliar surroundings. If a person stays in the same room the following night they tend to sleep more soundly. Yuka Sasaki and her colleagues at Brown University set out to investigate the origins of this effect.

Dr. Sasaki knew the first-night effect probably has something to do with how humans evolved(进化). The puzzle was what benefit would be gained from it when performance might be affected the following day. She also knew from previous work conducted on birds and dolphins that these animals put half of their brains to sleep at a time so that they can rest while remaining watchful enough to avoid predators (捕食者). This led her to wonder if people might be doing the same thing.

To take a closer look, her team studied 35 healthy people as they slept in the unfamiliar environment of the university's Department of Psychological Sciences. The participants each slept in the department for two nights and were carefully monitored with techniques that looked at the activity of their brains. Dr. Sasaki found, as expected, the participants slept less well on their first night than they did on their second, taking more than twice as long to fall asleep and sleeping less overall. During deep sleep, the participants' brains behaved in a similar manner seen in birds and dolphins. On the first night only, the left hemispheres (半球) of their brains did not sleep nearly as deeply as their right hemispheres did.

Curious if the left hemispheres were indeed remaining awake to process information detected in the surrounding environment, Dr. Sasaki re-ran the experiment while presenting the sleeping participants with a mix of regularly timed beeps (蜂鸣声) of the same tone and irregular beeps of a different tone during the night. She worked out that, if the left hemisphere was staying watchful to keep guard in a strange environment, then it would react to the irregular beeps by stirring people from sleep and would ignore the regularly timed ones. This is precisely what she found.

(1) What did the researchers find puzzling about the "first-night" effect? A. To what degree it can trouble people. B. In what way it can be beneficial. C. What role it has played in evolution. D. What circumstances may lead to it.
(2) What do we learn about Dr. Yuka Sasaki doing her research? A. She found birds and dolphins remain watchful while asleep. B. She found birds and dolphins sleep in much the same way. C. She got some idea from previous studies on birds and dolphins D. She conducted studies on birds' and dolphins' sleeping patterns.
(3) What did Dr. Sasaki find about the participants in her experiment? A. They tended to enjoy certain tones more than others. B. They tended to perceive irregular beeps as a threat. C. They felt sleepy when exposed to regular beeps. D. They differed in their tolerance of irregular tones.
(4) Which section of a magazine is the passage probably taken from? A. Science B. Entertainment C. Culture D. Adventure
【考点】
推理判断题; 细节理解题; 说明文; 环境保护类;
【答案】

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1.阅读理解

California bums every year. But among a record-breaking heatwave, 2020 is the worst burning year yet. As of the September 2020, more than 7,600 fires burned over 2.5m acres of land. The season ran for more than several months.

That fits a long-term trend, for California's wild fires are getting steadily worse. Large fires in the 2010s burned 6.8m acres on average, up from 3.3m acres in the 1990s. The fire season in 2020 lasted nearly three months longer than it did in the 1970s. Over the past decade, the state has spent an average of $3.7bn a year fighting fires. Add the cost of rebuilding, treating victims and restoration, and that is perhaps a tenth of the total cost.

The reason is a double blow of climate change and development. More homes are being built next to forests, in what experts call the "wild-land-urban interface" (WUI). A 2018 study estimated that roughly a third of American homes were in the WUL Pricey housing has pushed people in California onto cheaper land close to the wilderness. At the same time, climate change is lengthening the dry season, which stores up fuel for fires. In California, a "huge drought" -- in which dry years become more common and wet ones scarcer (稀少)-- is making matters even worse.

Since neither trend shows much sign of turning around, people on America's west coast will have to learn to co-exist with more and more frequent fires. It's not that different to building on an earthquake active region," says Max Moritz, a wildfire expert at the University of California at Santa Barbara. He suggests that houses should be built near water or open agricultural lands, which can offer a useful barrier.

(1) How does the second paragraph develop? A. By giving examples. B. By analyzing causes. C. By providing statistics. D. By following time order.
(2) Why are more houses being built next to forests? A. People can get closer to nature. B. California advocates forest development. C. Low-income people can't afford urban houses. D. Climate change has made the dry season longer.
(3) What does Max Moritz imply? A. Life is hopeless for people on America's west coast. B. Great potential danger goes with the houses in WUL C. Wildfire experts should study where to build houses. D. People should live away from earthquake active regions.
(4) What is the author's purpose in writing the text? A. To instruct. B. To warn. C. To persuade. D. To inform.
阅读理解 模拟题 普通
2.阅读理解

A visit to the"Big Smoke "wouldn't be complete without seeing some of the famous London land marks. These destinations are what make London the world-class city and tourist attraction that it is!

Big Ben

When you think of London, undoubtedly you will associate it with an image of this famous clock tower located alongside the Houses of Parliament as it majestically overlooks the River Thames. With construction completed in 1859, the famous four-faced clock has been accurately keeping time for over 150 years. Today, its iconic architecture is firmly rooted in most people's vision of London.

Tower of London

Despite there being some beautiful castles near London, the Tower of London is the only castle actually within central London. This historical monument has served many different purposes from awar shelter to a prison, a royal mint(铸币厂),and even a zoo! Since the 1600s,the Tower has also been home to the royal family's most precious possessions.

St.Paul's Cathedral

St.Paul's Cathedral is an architectural masterpiece and one of London's most iconic buildings. Take a walk around this spectacular church and you'll be amazed by its grandeur and impressive exterior. However, it is also well worth visiting inside to discover the resting places of several notable people, including Sir Christopher Wren, Admiral Nelson, and The Duke of Wellington. Besides, once inside this massive building, you can take hundreds of steps to reach the top of the dome and enjoy the full view of London.

(1) What can be learned about Big Ben? A. It hasn't kept time for so long. B. It is located by the River Thames. C. It is the oldest building in London. D. It houses many precious possessions.
(2) What did the Tower of London function as in history? A. An art gallery. B. A royal theater. C. A castle garden. D. A military building.
(3) Which of the following is a burial site for many celebrities? A. Big Ben. B. St.Paul's Cathedral. C. The Tower of London. D. The Houses of Parliament.
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3.阅读理解

The following courses are what you may be interested in to expand your academic knowledge.

Stanford Online

Stanford Online is the digital extension of Stanford University. You can attend free courses, browse (浏览) the content library or take the courses for credit after paying. The course instructors teach in real-time, so the options change each semester. Different programs you can pursue include graduate and professional education.

Harvard University Online Courses

They offer free and paid classes with a vast subject range, including art and design, business, and computer science. The site's search features make it easy for you to find classes to fit your schedule. You can browse courses based on your learning plans, such as scheduling classes in two weeks, three months or a year from now.

Open Yale Courses

Open Yale Courses gives you free access to a wide range of Yale University's classes. There's no certificate, degree or course credit option available through the site because it's exclusively a free offering for those who want to expand their academic knowledge. The available classes are classroom recordings and provide the educational material you require for increasing various skills.

MIT OpenCourseWare

It provides individuals with free access to over 2,500 of its undergraduate and graduate classes. All courses are free for users, and there's no registration required to view and watch the lesson materials. Additionally, the site makes the video classes easy to download for you to watch offline or to share with your friends, family members or colleagues.

(1)  What makes Harvard University Online Courses special? A. The flexibility. B. No charge. C. The diverse content. D. No registration.
(2) Which course will you take if you don't want a certificate? A. Stanford Online. B. Harvard University Online Courses. C. Open Yale Courses. D. MIT OpenCourseWare.
(3) What do the listed courses have in common? A. They can be learnt offline. B. They're offered by universities. C. They are classroom recordings. D. They are developed by students.
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