1 . Some talk of building settlements on the moon or mars to help make sure humanity survives long into the future. Others have their sights set closer to home: on future cities under the ocean.
“Technologically speaking, it is absolutely possible to colonize the bottom of the sea,” says Fabien Cousteau, a well-known ocean explorer who once spent 31 days living in what is now the world’s only functioning undersea habitat, Aquarius. It’s about the size of a school bus and located 62 feet below the ocean surface off the Florida Keys.
Just as astronauts test what it would be like to live in space, aquanauts try out undersea living with an eye on the future. Escaping from disasters such as climate change, wars, or pandemics is one reason to live under the sea. Others include studying, exploring, or appreciating the ocean. It’s costly and expensive to constantly keep up an ocean habitat which must pump in or make its own air, electricity, and fresh water. Inhabitants have to deal with high pressure. And infections can develop rapidly due to high humidity.
Despite the challenges, several new ocean habitats and cities are under construction. A series of space station-like undersea living quarters for aquanauts called Proteus are scheduled to be completed by 2025 off Curacao, an island north of Venezuela in South America. An undersea colony called Ven Base Alpha will be built near a hydrothermal vent, which would supply it with energy. Meanwhile, an undersea city called Ocean Spiral in Japan would link its surface to the deep sea, using the difference in pressure to generate energy and produce fresh water. This sounds amazing, but it would be extremely expensive and remains just a design.
Not everyone agrees that building homes in the ocean is a good idea. This type of development could place even more strain on ecosystems that are already struggling with pollution and climate change. It’s important to make sure that any construction is done carefully, says Susanne Menden-Deuer, an oceanographer at the University of Rhode Island. Wild undersea habitats should be treated as “the precious, irreplaceable resource that they are,” she says.
1. What do we know about Aquarius?| A．It is still under construction. |
| B．It functions as an undersea school bus. |
| C．It is the only ocean habitat in operation. |
| D．It only allows a person to live there for 31 days. |
| A．The present and future of living under the sea. |
| B．The reasons and challenges of living under the sea. |
| C．The purpose and cost of building undersea settlements. |
| D．The problems and findings of building undersea settlements. |
| A．Rapid development of undersea habitats. |
| B．Protection of irreplaceable ocean resource. |
| C．Negative impacts on undersea ecosystems. |
| D．Struggles with pollution and climate change. |
| A．A textbook. |
| B．An exam paper. |
| C．An academic article. |
| D．A science magazine. |
2 . The future of the city is here. Sidewalk Labs, a company owned by Alphabet(which also owns Google), won a competition to design a neighborhood by Lake Ontario, Canada. The competition was held as a way to improve the building, public spaces, and transportation in the area .
The city of Toronto has promised $1.25 billion for roads, sidewalks, electricity, water, and so on. Sidewalk Labs has already put $50 million into the project.
The neighborhood has already been given the name "Quayside. "When finished, it will include many high-tech and environmentally friendly designs. These include heated sidewalks and cycle tracks to melt（融化）snow and self-driving buses. There will also be narrower street with less car and more room for public spaces like parks. The buildings will be made of plastic to make them more affordable and easier to change. Underground passages will be used for rubbish collection and for repair.
There will also be environmentally friendly energy use, changeable traffic lights, and continuous improvement through data (数据) collection and studies. This data will come from sensors(传感器) collecting information about traffic or noise levels, energy use, waste output, etc.
There are, of course, some worries about the project. One is that there is already a housing shortage in Toronto, and making an expensive, high-tech neighborhood won't help with that. It is important for Quayside to be used by the elderly, the disabled, the poor and people of different races, not only by people who work at tech companies.
Another worry is about data collection and people' s privacy. Dan Dctoroff, the CEO of Sidewalk Labs, said that the data collection will only be used to improve people's life in Quayside. He added that privacy can be put into every part of the neighborhood.
Since this kind of neighborhood is new, no doubt there will be many problems, and new laws will have to be made for this kind of high-tech housing. But hopefully, we will be able to see such a futuristic neighborhood soon.
1. How will Sidewalk Labs carry out its project?| A．By developing advanced technology |
| B．By cooperating with the city of Toronto |
| C．By collecting enough money. |
| D．By calling on people to take part in it. |
| A．Details of upcoming neighborhood. |
| B．Technologies offered by project |
| C．High-tech designs of Quayside |
| D．Equipment in the unique neighborhood |
| A．Because they have to spend much time on it |
| B．Because Quayside is only available to the elderly, the disable and the poor |
| C．Because they fear their privacy will be probably given away |
| D．Because not all people want to live in such a neighborhood. |
| A．Positive | B．Negative. | C．Worried | D．Doubtful |
3 . For years, planet-hunters have been searching for a planet other than Earth that can support life. They may have found one.
The planet is the sixth found orbiting a star called Gliese 581. Steven Vogt, one of the scientists involved, expects the new planet to have water. On Earth, when we find water, we find life.
A planet that can support life has to be just the right size for its system and just the right distance from its star. Some planets orbit so close to their stars that they’re much too hot for liquid water—or for life as we know it.
But a right-sized planet that's neither too close nor too far might be just right for water. Gliese 581 is probably just right. It is about three times as huge as Earth.
The new planet is 20 light years away, which is as far as 250 million trips to the Moon and back.
Gliese 581 is an exciting discovery—and astronomers are likely to find more soon, thanks to new, powerful telescopes specifically designed to look for planets.
| A．We can’t travel at the speed of light. |
| B．It’s pretty hard to imagine that water wouldn't be there. |
| C．Human beings won’t be visiting this planet any time soon. |
| D．So scientists looking for life on other planets look for water first. |
| E．It orbits its star so closely that it goes all the way around in only 37 days. |
| F．Astronomers will probably find more potential life-supporting planets soon. |
| G．Other planets keep their distance from the stars—where they’re too cold to have water or life. |
4 . The Google Brain team has been working on computing systems called “neural networks”—systems that were designed based on how neurons work in the human brain.
This time, they gave a mission to three of the neural networks, which they named Alice, Bob and Eve. Each of the networks had its own job—Alice sent messages to Bob, Eve tried to “eavesdrop”(偷听) and find out the messages, and Alice and Bob had to figure out a way to hide the messages from Eve. All the help that Alice and Bob got from the researchers before the mission began was made up of a set of numbers, which Eve didn’t have access to.
At first, Alice was not very good at sending secret messages. But slowly it worked on a way to encrypt(加密) them—putting information into a special code so that others could not understand it if they got the information—using he numbers given by researchers. And after practice, Bob also came to be able to decrypt(解密) Alice’s messages. Without the numbers or keys, Eve failed to understand Alice’s “speech” most of the time.
This test is considered a big step in the development of computers’ learning skills. “Computing with neural networks on this scale has only become possible in the last few years, so we truly are at the beginning of what’s possible, ” Joe Sturonas of US encryption company PKWARE told New Scientist magazine.
Unfortunately, the test happened only one week after UK physicist Stephen Hawking, While speaking at Cambridge University, warned how AI(artificial intelligence)could develop a will of its own. This could be “either the best or the worst thing ever to happen to human being”, he said.
But just as Sturonas pointed out, no matter what the possibilities of computers are in the future, they are just starting out. We still have plenty of time to work out a solution before they get anywhere near becoming a threat to humanity.
1. For what purpose was the test conducted?| A．To study how neurons work in the human brain. |
| B．To study how computing systems work and learn. |
| C．To find out a more effective way to keep secrets. |
| D．To find out a more powerful way to break the codes. |
| A．encrypting—messages—code—messages—decrypting |
| B．messages—encrypting—code—decrypting—messages |
| C．code—messages—encrypt—decrypting—messages |
| D．messages—code—decrypting—encrypting—messages |
| A．AI must be a blessing. | B．AI should be forbidden. |
| C．AI is sure to be a failure. | D．AI is a double-edged sword. |
| A．Hopeful. | B．Doubtful. |
| C．Puzzled. | D．Panicked. |
