修改时间：2021-05-20 浏览次数：111 类型：开学考试
From this issue, we explore why the Search for Extraterrestrial Intelligence (SETI) Institute hasn't turned up anything since its founding in the 1980s. (See page 30 for more.) We asked our Facebook followers: Do you think that astronomers will find evidence of alien life in your lifetime?
Loran McCormick: 1 think they already have it. Judging by the sudden industrialization, I figure they found something that's probably been here since before humans walked the Earth.
Jens Avery: We may find life, but it may not want anything to do with us. We are not very advanced and can't even get along with each other.
Steven Buhrow: I think the more important question is — will any government ever publicly admit it in our lifetime? I fully believe that we could discover alien life today and the government would simply say the public is not ready for this information.
Jenna Walsh: I think we already see it, but just don't realize what it is. Intelligent alien life probably doesn't want anything to do with the disaster that is Earth at this point, so no doubt they're playing it safe and observing from a safe distance.
Christopher Harvey: By alien life, do you mean intelligent alien life? Then no. It would be extremely hard to find, short of them coming down to Earth. But if you mean unintelligent alien life, like bacteria or single cell, we might.
The Tibet autonomous region has placed nearly half its land area under the strictest ecological supervision (监督).It was announced at an annual meeting of the regional People's Congress, which kicked off on Wednesday.
The ecological protection area, which covers more than 539,000 square kilometers, makes up 45 percent of the region's area, and 22 ecological reserves have been built and are operational.
According to the government work report, the rate of days with good air quality in Tibet's cities has reached 99.4 percent, and all the region's drinking water sources have met applicable standards.
The report also said that the number of Tibetan antelope (羚)in the region has risen to more than 200,000, wildlife species to 1,072 and black-necked cranes to more than 8,000. Five rare new species have been discovered in recent years. The region has spent 12.2 billion yuan ($1.9 billion) on ecological protection projects in recent years. Five cities and three counties have been named as national-level ecologically civilized model cities and counties, and more rural residents have benefited financially by undertaking part-time ecological protection work.
More advanced monitoring facilities have been in place in the reserve, with more ecological protection inspectors employed to undertake protection work. The professional ecological inspectors are provided with basic tools such as motorcycles, telescopes and paging receivers, and they provide feedback regularly. Professional inspectors also receive one week of training every year from professors at Tibet University.
Kunsang Darje, a railway maintenance worker in Nagchu, said that apart from maintaining the railway and highway, he also collects trash along the section with his colleagues. “The place I work is in a no-man's land, and I think it's very important to protect the animals there without affecting them with human activities, and we are also bound to take responsibility there," he said.
No one ever said science education was easy. Certainly the concepts we teach, like conservation of momentum (动量守恒) or quantum mechanics (量子力学)，can be hard to grasp. But what really makes our reaching complicated is that we're also trying to teach a deeper lesson at the same time — to help students understand the nature of science itself.
All too often, young people get the impression that science is about learning certain "laws" and then applying them to different situations. After all, that's what we make them do on tests, to show that they've been doing the work. But that's not it at all. Science is the process of building these concepts through the collection of experimental evidence.
And while I'm on it let's call these concepts what they really are — not laws, but models. Science is all about building and testing models. It's difficult to help students understand that aspect of science when we just give them the models to begin with. Sure, in physics we often include historical or mathematical evidence to support big ideas, but that often isn't enough.
Of course, we can't start from scratch. If students had to build their own models from the ground up, it would be like trying to learn programming by inventing computers. As Isaac Newton is supposed to have said, we stand on the shoulders of giants. We must take models built by others and go from there.
What I'd like to suggest is that this actually provides a great way into the adventure of science and an opportunity to meet our objectives as educators. If you can create a situation that challenges students' assumptions and produces conceptual conflict, that's a great opportunity for learning.
Each day, 10-year-old Seth asked his mom for more and more lunch money. Yet he seemed skinnier than ever and came home from school hungry. It turned out that Seth was handing his lunch money to fifth-grader, who was threatening to beat him up if he didn't pay.
Most kids have been teased by a brother or a friend at some point. And it's not usually harmful when done in a playful and friendly way, and both kids find it funny. But when teasing becomes hurtful, unkind, and constant, it crosses the line into bullying and needs to stop.
Bullying is intentional tormenting in physical or psychological ways. It can range from hitting, name-calling and threats to blackmailing money and possessions. Some kids bully others by deliberately separating them and spreading rumors about them. Others use social media or electronic messaging to tease others or hurt their feelings.
It's important to take bullying seriously and not just brush it off as something that kids have to tolerate. The effects can be serious and affect kids' sense of safety and self-worth. In severe cases, bullying has contributed to tragedies, such as suicides and school shootings.
Kids bully for a variety of reasons. Sometimes they pick on kids because they need a victim — someone who seems emotionally or physically weaker, or just acts or appears different in some way — to feel more important, popular, or in control. Although some bullies are bigger or stronger than their victims, that's not always the case.
Sometimes kids torment others because that's the way they've been treated. They may think their behavior is normal because they come from families or other settings where everyone regularly gets angry and shouts or calls each other names. Some popular TV shows even seem to promote meanness — people are “voted off", ignored, or ridiculed for their appearance or lack of talent.
Unless your child tells you about bullying — or has visible injuries — it can be difficult to figure out if it's happening.
Do you ever walk out of a room with an idea in your head, only to discover moments later that it's gone? if so, don't worry: it's a very common experience.
The problem is often caused by "event boundaries". They make you believe that a particular mental task is over.
Tests have proved that we're much more forgetful when we move from one location to another. It's because anything that seems like the end of a task — closing a study book, finishing a phone call, taking a cake out of the oven — can have the same effect. Within seconds, much information in your mind has disappeared.
First, stop telling your brain that its work is done. This can be as simple as leaving a book open instead of putting it back on the shelf. Second, create clues to carry with you across any unavoidable event boundary. Notice when these end-points are coming up, and spend a moment improving your memory.
If possible, say the key points out loud: the job you're walking off to do in the next room, for example, or the plans you've just made on the phone. We actually know memory depends on imagery.
Every day you're faced with event boundaries that may restrict your recall. But by avoiding them when you can, and disguising them when you can't, you'll find that much less of your learning gets lost.
A. But here's how to fight back.
B. So picture the details you want to keep.
C. Many of us don't know how to deal with it properly.
D. These are what your memory uses to stop remembering.
E. And scientists believe that we can explain and approach it.
F. But the same happens when we go from one activity to another, too.
G. And only in this way can we overcome event boundaries successfully.
Shamarr Allen was sleepy at home one evening last July when he was shocked awake by a TV news item. There had been a 1 among a group of children in the slum of New Orleans.
2 from the city's slum, Allen is one of the most celebrated jazz trumpeters in the city. After seeing the3 news that morning, it didn't take long for Allen to4 a possible approach. He had a few spare 5lying around Maybe he could offer them to kids in exchange for their guns.
Allen named the6My Trumpet Is My Weapon—after all, it was something of a 7 to release personal emotions, that 8me and redirected my path was a trumpet and the music.'' Allen says He met with the New Orleans mayor to figure out how to make children feel 9 handing over their guns to the police.
Allen has collected seven guns so far, a small but symbolically important 10. But he doesn't stop with the11of gun tor instrument. After the exchanges, Allen connects the children with local 12who give them tree virtual trumpet lessons.
More importantly, he has brought hope for his city and young people 13 a better life. "I just say, 'Look. I come from where you come from, and I can show you the 14 that got me out,'' says Allen. "And 15 may not be the way for you, but it will at least open your mind to see what's out there."
It's not surprising that we feel blue during the winter months. There's even a recognized form winter depression — Seasonal Affective Disorder (SAD). Scientists think that many factors may result the problem.
Many of us know those have mild cognitive (认知的)problems seem to function less well during the winter. A study of 3,353 older adults confirmed this and (suggest) that winter might be the most likely season to get an Alzheimer's diagnosis. Not only that, other researches show that younger adults have a (bad) memory and attention in the colder months than the old. Doctors say getting enough sleep will improve memory and (concentrate).
What person with joint aches and pains doesn't complain about feeling more terrible during winter? Some doctors think it's linked to (change) in barometric (气压的)pressure. And, of course, when the weather is bad, we're less likely to exercise. But in fact staying active will help keep your joints supple (有弹性的)and (strength) your muscles. Just a few minutes every day will help. And it's important to maintain a healthy weight, as extra kilos put extra pressure on joints.
So if you feel down or moody in winter, try to get outdoors as much as possible (ensure) enough better sleep at night, make the most of the available daylight and take regular exercise. Only in these ways can we (success) gel rid of winter depression.
Balthazar is my pride. It is a French brasserie in New York City. I have run it for twenty years. Though it is intended to attract people from all walks of life, most of its regular customers are those who work in the companies alongside Wall Street.
One night at Balthazar, four Wall Street businessmen ordered the restaurant's most expensive red wine: a $2,000 bottle of Chateau Mouton Rothschild, the most famous brand of Bordeaux. One of the two waiters transferred the Bordeaux into a fancy glass container at the waiter's counter.
Meanwhile, a young couple ordered the restaurants cheapest red wine, an $1 8 pinot noir. Usually, people who ordered pinot noir poured the wine directly into their glasses, but this couple insisted the wine be poured into a fancy glass container before they drank.
These two very different wines were now in the same containers.
Mistaking the $ 18, wine for the $2,000 Rothschild, the first waiter poured the cheap wine for the businessmen. The businessman hosting the other three considered himself a wine expert. He took a taste of the cheap wine in the first place, and showing off, he burst into delight about its purity. "Fantastic!" he claimed.
The young couple, who ordered the $18 pinot noir, were then unintentionally served the $2,000 Rothschild by the second waiter. On taking their first drink of what they believed was cheap wine, they jokingly pretended to be drinking an expensive wine and copied all the behaviors of a wine expert, shaking the wine glasses, observing the liquid inside and tasting it slowly, totally fascinated.
Five minutes later, the two waiters discovered their error, and horrified, phoned me at home.
注意：
1）续写词数应为150左右；
2）请按如下格式在答题卡的相应位置作答。
I rushed into my restaurant.
……
After comforting the waiters, I walked directly towards the businessmen with a $2,000 Rothschild.
试题篮
