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提问人：网友jmssxt 发布时间：2022-01-07

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3. The biggest benefit of the archive is that it is so ________that you can immediately compare a Kiswahili speaker to a native English speaker.

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第1题

Imagine aguitar so tiny that you can ’t seeit with the human eye, but you can hearsound whe n its strings are pulled. Some people say the future is big, but when it comes to technology, the world is getting smaller.

Nanotechnology(纳米技术 )is the science that deals with doing things in a very small way, and it is being studied and developed all over the world. Micro-machines too small to been seen by the eye are being designed to do many things. And these machines no larger than in diameter than a human hair, are extremely powerful. Many scientists say nanotechnology will produce the next industrial revolution(工业革命 ).

Nano comes from the Greek word dwarf . A nanometer is one-billion of a meter, The period of the end of this sentence can contain about 100 micrometers, which in equal to 100,000 nanometers.To understandthis new technology, we have to get rid of the normal ideas of size and strength.

Minute(微小的 ) robots , called “ nanorobots ” are being developed in the revolutionize manufacturing. Instead of cars being produced on assembling line, for example, scientist predict that carscan be built in a giant container into which raw material and machines have beenplaced. Thousands of nanorobots will direct the processandtell the machine what to do.

Micro-machines can also be used to make our environment safer. Today, poison chemicals are stored in containers or transported by trucks or trains. This is sometimes result in dangerous spills. But with nanotechnology, manufacturers could have their own tiny chemical factories. The produce would be no bigger than a sugar cube and would manufacture exactly the amount of chemicals neededat the moment. No chemicals would needto be stored. The workplace would be safer,and the environment would be cleaner.

The author mentions guitar at the beginning of the passagein order to_______ .

A.introduce the knowledge of guitar

B.introduce the topic of nanotechnology

C.show his or her own interest in music

D.describe the craft of making musical instruments

According to the passage,why does the nanotechnology lead to the next industrial revolution？A.Micro-machines are tiny but beautiful

B.Micro-machines are strong but smart

C.Micro-machines are small but powerful

D.Micro-machines are cute and varied

The word dwarf in Pra.3 is closestin meaning to ？A.clever

B.slow

C.quick

D.minute

With nanotechnology, where will carsprobably be produced ？A.On assembleline

B.In huge containers

C.Inside the micro-machines

D.Inside the nanorobots

Which of the following is NOT the causes leading to cleaner environment by adopting nanotechnology？A.There will be less dangerousspills.

B.The amount of produced chemicals can be precisely controlled.

C.Micro-factories neednot store chemicals.

D.The factories will be of large size.

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第2题

On this radio channel you can hear the clock ring when it is ______ (actual) striking because microphones are connected to the clock tower.

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第3题

Part A Note-taking And Gap-filling

Directions: In this part of the test you will hear a short talk. You will hear the talk ONLY ONCE. While listening to the talk, you may take notes on the important points so that you can have enough information to complete a gap-filling task on a separate ANSWER BOOKLET. You will not get your ANSWER BOOKLET until after you have listened to the talk.

听力原文： Extinction is gaining speed. One of the most demanding environmental tasks is trying to preserve at least some of the 10 million life forms on the planet. The world's remaining rain forests are being logged at a rate of 5000 acres an hour. Oceans are being emptied of fish and filled with toxic waste. Wetlands are being dried out. Pastures are being turned into dust bowls or concrete jungles. Species have nowhere to and so they die.

The simplest thing we can do to support biodiversity is to eat sensibly. The plants and animals that we eat reflect our relationship with nature and bind us to her. The greater the diversity we maintain in our diet, the greater the diversity we nurture in the fields and the oceans.

Fast food is a remarkable and tragic phenomenon. It is indeed fast; it is also portable, hygienic and consistent. On the other hand, it is also an ecological nightmare. It is environmentally devastating, nutritionally inadequate and shuns biodiversity. Fast food chains often fatten beef in rain forests. Rainforests are cleared for cattle grazing. As a result, a medium size hamburger represents approximately five square meters of rain forests and all the hundreds and thousands of species that passed through and benefited from that five square meters. The land beneath rain forests is very poorly suited to grazing and it has to be abandoned within a couple of years and the whole process repeated somewhere else. It already takes a lot of rainforests to keep hamburger eaters happy in Japan and America. It will take even more to keep them happy in China, Vietnam and all the other destinations on multinational corporations' itineraries.

Fast food chains serve the same food all over the world. That means they strive and mostly succeed in serving the same French fries made from the same type of potatoes and the same salads made from the same type of lettuce and tomatoes in every country. With biogenetic tampering heavy doses of agrochemical, almost anything is possible. Fast food chains move into countries where the fast food ingredients are quite different from traditional local ingredients. Local farmers abandon their traditional crops and try to grow the ingredients needed for the very limited international menus.

Supermarkets appear to have everything. Indeed in many developed countries a large supermarket will stock an average of 22,000 items on its shelves. The diversity, however, is only in the packaging. The content is pretty much all the same. Nearly everything that you can buy to eat at a supermarket comes from a meager 30 plants and 6 animals. We are being forced to rely on fewer and fewer varieties of breeds of plants and animals. Although throughout history human beings have used more than 10,000 edible plant species for good health, now barely 150 species are grown for the human diet, and most people live off no more than 12 species. Food choices are being dangerously narrowed simply to suit monoculture, mass production, market performance and greed. Multinational corporations have already succeeded in patenting many plants and animals. They have even patented breast milk—lest in case anyone should think of selling it.

We can help preserve biodiversity by eating vegetarian and by eating as wide a selection of ingredients as possible. We can choose to eat in local restaurants rather than fast food chains. We can shop in season, buy local organic produce, favor less common types of food, and avoid buying imported fruits and vegetables.

We try to simplif

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第4题

What we did was expose American babies during this period to Mandarin. It was like having Mandarin (6) _____ come and visit for a month and move into your house and talk to the babies for 12 sessions.

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第5题

Here's what it looked like in the (7)______.

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第6题

We knew that, when monolinguals were tested in Taipei and Seattle on the Mandarin sounds, they showed the same(4)______.

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