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Who probably built the first permanent shelters？
A．Fish-eaters.
B．Hunters.
C．Lumbermen.
D．Farmers.
答案
更多“Who probably built the first permanent shelters？A．Fish-eaters.B．Hunters.C．Lumbermen.D．Farm”相关的问题
第1题
请根据短文的内容，回答题。
Intelligent Machines
(1) Medical scientists are already putting computer chips (芯片) directly into the brain to help people who have Parkinson&39;s disease, but in what other ways might computer technology be able to help us？ Ray Kurzweil is author of the successful book The Age of Intelligent Machines and is one of the world&39;s best Computer research scientists. He is researching the possibilities.＜br＞
(2) Kurzweil gets computers to recognize voices. An example of this is Ramona, the virtual (虚拟的 ) hostess of Kurzweil&39;s homepage, who is programmed to understand what you say. Visitors to the site can have their conversations with her, and Ramona also dances and sings.＜br＞
(3) Kurzweil uses this technology to help people with physical disabilities. One of his ideas is a"seeing machine". "This will be like a friend that could describe what is going on in thevisible world," he explains. Blind people will use a visual sensor (探测器) which will probably be built into a pair of sunglasses. This sensor will describe to the person everything it sees.＜br＞
(4) Another idea, which is likely to help deaf people, is the "listening machine". This invention will recognize millions of words and understand any speaker. The listening machine will be able to translate into other languages, so even people without heating problems are likely to be interested in using it.＜br＞
(5) But it is not just about helping people with disabilities. Looking further into the future,Kurzweil sees a time when we will be able to download our entire consciousness onto a computer. This technology probably won&39;t be ready for at least 50 years, but when it arrives, it means our mind will be able to live forever.
Paragraph 2 __________ 查看材料
A.A new pair of ears
B.Computers that can communicate
C.Everlasting consciousness on a computer
D.Time to break off a friendship
E.An author and researcher
F.A new pair of eyes
第2题
请根据短文的内容，回答题。
Batteries Built by Viruses
What do chicken pox, the common cold, the flu, and AIDS have in common？ They&39;re all disease caused by viruses, tiny microorganisms that can pass from person to person. It&39;s no wonder that when most people think about viruses, finding ways to steer clear of viruses is what&39;s on people&39;s minds.＜br＞
Not everyone runs from the tiny disease carriers, though. In Cambridge, Massachusetts,scientists have discovered that some viruses can be helpful in an unusual way. They are putting viruses to work, teaching them to build some of the world&39;s smallest rechargeable batteries.＜br＞
Viruses and batteries may seem like an unusual pair, but they&39;re not so strange for engineer Angela Belcher, who first came up with5 the idea. At the Massachusetts Institute of Technology(MIT) in Cambridge, she and her collaborators bring together different areas of science in new ways. In the case of the virus-built batteries, the scientists combine what they know about biology,technology and production techniques.＜br＞
Belcher&39;s team includes Paula Hammond, who helps put together the tiny batteries, and Yet-Ming Chiang, an expert on how to store energy in the form. of a battery. "We&39;re working on things we traditionally don&39;t associate with nature," says Hammond.＜br＞
Many batteries are already pretty small. You can hold A, C and D batteries6 in your hand. The coin-like batteries that power watches are often smaller than a penny. However, every year, new electronic devices like personal music players or cell phones get smaller than the year before. As these devices shrink, ordinary bakeries won&39;t be small enough to fit inside.＜br＞
The ideal battery will store a lot of energy in a small package. Right now, Belcher&39;s model battery, a metallic disk completely built by viruses, looks like a regular watch battery. But inside,its components are very small-so tiny you can only see them with a powerful microscope.＜br＞
How small are these battery parts？ To get some idea of the size, pluck one hair from your head.＜br＞
Place your hair on a piece of white paper and try to see how wide your hair is-pretty thin, right？＜br＞
Although the width of each person&39;s hair is a bit different, you could probably fit about 10 of these virus-built battery parts, side to side, across one hair. These microbatteries may change the way we look at viruses7.
According to the first paragraph people try to __________. 查看材料
A.kill microorganisms related to chicken pox， the flu， etc
B.keep themselves away from viruses because they are invisible
C.stay away from viruses because they are causes of various diseases
D.cure themselves of virus-related diseases by taking medicines
第3题
听力原文： As you probably know, log structures are gaining popularity. They are no longer just the simple country homes that we think of as the traditional log cabin. Some upscale homes now incorporate natural round logs in sealing beams and walls. People seem to think that the rounded logs give their homes a cozy warm atmosphere. And even people who want to build a traditional log cabin on their own can buy a kit with precut logs that fit together like pieces of lig-saw puzzle. Before showing you some slides of modem log houses, I'd like to give you a little historical background on the subject.
Log cabins were first built in the late 1600s along the Delaware river valley. The European immigrants who settled there brought centuries' old traditions of working with logs. And in this heavily wooded area logs were the material in hand. Log cabins were the most popular in the early 1800s with the settlers who were moving west. They provided the answer to the pioneer's need for a sale and sliding boards for windows. But the log buildings that have probably had most influence on modern architects are those of the mountain retreats of wealthy New Yorkers. These country houses which were popular in the early 1900s typify what's known as the Adoroundyx style. Now let's look at those slides.
What is the speaker mainly discussing？
A．Traditional European architecture.
B．Techniques for building log cabins.
C．The history of log structures.
D．How to build a home by yourself.
第4题
A variety of job assignments, including job or project rotation, also keep a job【36】______becoming dull.
Whereas it's natural for some individuals to want to move ahead immediately to more difficult assignments, 【37】______proper guidance they can continue to learn and to gain versatility by working on a number of jobs that are essentially【38】______the same complexity. This way they gain breadth, if not depth.
Probably the greatest offense to guard【39】______when dealing with younger specialists is to reject ideas out of hand. You must listen—and listen objectively—to their suggestions. Avoid【40】______overcritical. You want to nurture an inquiring mind with a fresh approach. You'll frustrate it quickly if you revert too often【41】______ "We've tried that before and it won't【42】______here. "
One sure way to disenchant【43】______college graduates is flagrantly misusing their talents. Expect them to do some routine work, of course. But don't make their【44】______work just one long series of errands. This includes such break-in assignments【45】______performing routine calculations, digging up【46】______material, 【47】______operating reproduction equipment. One large manufacturing company recently interviewed a number of【48】______engineers who had left them. The company found that the overwhelming complaint was that the company not only did not offer work that【49】______challenging but also expected【50】______too little from them in the way of performance.
(31)
第5题
听力原文： For more than two hundred years people have been using trains. There are trains to carry people, trains to carry animals. There are fast trains, slow trains, trains that go under the ground, trains that go through mountains. In busy cities, trains have been put under the ground. The subway trains run on tracks through huge tunnels under the noise and traffic of the city. The monorail is another kind of train used in busy places. The train hangs from a rail high above the streets and it carries people quickly in and out of the city. Railroad tunnels which are miles long have been built through mountains. Do you think these tunnels are ready to build？ They are not. Workers spend many years on the job. Is it possible for a train to travel over water？ Yes, it is. Great bridges have been built just for trains. And railroad tunnels have been built under the water. Some trains travel great distances. You can travel for 2,461 miles on Australia's trains which go across the continent or you can ride 6,000 miles across Russia. Today's trains have nice little bedrooms and dining rooms for people who travel long distances. Years ago trains were used to carry important people. These trains had beautiful bedrooms, bathrooms, dining roans, and sitting rooms. They were like Hale palaces really fit for a king. You have probably seen freight trains. There are many kinds. There are trains to carry logs, refrigerator trains to carry food, tank trains to carry fuel, even trains to carry cars. Some trains carry trucks and take them to other places. Then the trucks can travel on the roads. Trains have long been useful to men and women and to children. Many children have model trains. With the model trains they can build their own railroads and enjoy the wonderful world of trains.
(23)
A．More than three hundred years.
B．More than one hundred years.
C．More than four hundred years.
D．More than two hundred years.
第6题
Some of the pioneers of the new economy are saying very strange things. These moguls of modern-day capitalism solemnly deny that they are engaged in business for the purpose of making money. What's going on here？ Adam Smith, the founding father of capitalism, presumed that people engage in commercial activity for the purpose of economic gain. Have capitalism's most successful practitioners evolved beyond such base intentions？ Are we to infer that the world's largest wealth-creation scheme is being driven largely by nonprofit motives？
Not really. New-economy tycoons still like to make money. They simply want to make clear that they are also driven by higher motives. And this trend in pursuit of higher things is spreading through the business world. A recent editorial in the Red Herring posited business as an expression of the highest human capacities: "Money comes to those who do it for love." Such talk has become so common that we have to remind ourselves that it is a fairly recent innovation. You probably don't have the time to review the immense sociological literature on the attitudes of workers in the early and middle part of the 20th century. A single book, Studs Terkel's Working, should be enough to make the point, or perhaps just a brief talk with some old guys about their work philosophy. You won't hear a lot of mush about saving the world or finding nirvana in the workplace. To these people, today's rhetoric about meaning in the workplace must sound absurd.
The attempt to find higher purpose and meaning in work is likely to fail. In the few cases where it does not, it will probably fall short of our expectations. Modem technological capitalism, for all its vitality and efficiency, cannot supply on its own a meaning to life. This isn't just a philosophical matter. When we seek meaning in work at the expense of the institutions society has built specifically to contain meaning—the arts, our families, the church and so on—we risk a great deal. We may not merely disappoint ourselves; we could disrupt the very prosperity the free market has provided us.
The traditional capitalist view is that people ______.
A．engage in commercial activity for the purpose of economic gain
B．are driven largely by non-profit motives
C．do the things that they do for love
D．tend to search for meaning in their lives
第7题
The writer of this passage would probably favor______．
A．bus drivers who weren’t reckless
B．driving alone
C．a television set on the bus
D．no billboards along the road
第8题
The writer of this passage would probably be in favor of _____________.
A.bus drivers who weren't reckless
B.driving alone
C.a television set on the bus
D.no billboards along the road
第9题
The writer of this passage would probably favor ______.
A．bus drivers who weren't reckless
B．driving alone
C．a television set on the bus
D．no billboards along the road
第10题
The writer of this passage would probably favor
A．bus drivers who weren't reckless.
B．driving alone.
C．a television set on the bus.
D．no billboards along the road.
