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There have been many attempts to create an all-plastic bike. However, most have never made it past the beginning stage. Igus, a Germany-based company of high-performance plastics, and Dutch start-up MTRL aim to change that with the igus:bike — the world’s first city bike crafted almost totally from recycled plastic.

Igus CEO Frank Blasé first got the idea while vacationing on a Florida beach. A conversation with workers at a rental company made him aware of the challenges of maintaining beach bicycles. The long-term exposure to sand, wind and saltwater caused the bikes to rust (生锈) rapidly. Many had to be replaced in as little as three months.

The igus: bike was uncovered at a German trade show. It can be left outdoors in all weathers and does not require lubricant oil to reduce friction (摩擦) between parts. Since it does not attract sand, dust or dirt, the bike can be cleaned with a garden water pipe in seconds. Currently, 90 percent of the igus:bike is made using plastic. This includes the bicycle’s hard but lightweight frame, bearings, pedals, and wheel rims.

The igus:bike will also help reduce the world’s plastic pollution. The company says a single adult bike gives new life to about 35 pounds of single-use plastic that would have entered our landfills or waterways. For example, the first prototypes were made from old fishing nets. MTRL says it is planning to set producing facilities near plastic landfills around the world.

“From ocean plastics to plastics from other sources, the igus:bike has what it takes to become a high-tech environmental product,” says MTRL co-founder Benjamin Alderse Baas.

The plastic bikes are expected to come onto the market in early 2023. An adult model, made from recycled plastic, will cost about €1,400. A slightly cheaper version made using new plastic and an electric bike are also in the works. Igus also plans on sharing its technology with other bicycle producers. “We want to enable the bicycle industry to produce plastic bikes,” says Blasé.

【小题1】How did Frank Blasé get the idea about the igus:bike?
A.By carrying out detailed research.
B.By following the advice from consumers.
C.By learning from other bicycle producers.
D.By chatting with some workers on the beach.
【小题2】What can we learn about the igus:bike?
A.It is difficult to clean.
B.It is made from plastic entirely.
C.It has no friction between parts.
D.It can improve the environment.
【小题3】Which of the following may Igus do in the future?
A.Cut the price of the igus:bike.
B.Find new materials for the igus:bike.
C.Lecture on the technology of the igus:bike.
D.Set producing facilities around the world.
【小题4】Which can be a suitable title for the text?
A.Igus: an innovative company
B.The igus:bike: a plastic bicycle
C.Future of the bicycle industry
D.Plastic pollution around the world
22-23高二上·湖南长沙·阶段练习
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For decades, scientists and engineers have been working to develop computer programs that can understand and gen crate natural language. This has been a challenging task, but recent advances in machine learning have allowed us to create powerful language models.

The above paragraph was not written by a human. It was generated by a chatbot called ChatGPT, an artificial intelligence technology designed to mimic human conversation and language while drawing upon a vast wealth of knowledge to answer questions and solve problems. What ChatGPT offers seems more capable―and is potentially even more of a threat to jobs―than existing AI chatbot technology.

AI chatbots have been a routine feature of British life for a few years already. Logging onto many companies’ websites today triggers a popup window saying “Hi, I can answer your questions!” Telephoning restaurant chain Cafe Rouge, for example, puts you through to an audio chatbot that can recognize common questions and plays pre-recorded responses.

While ChatGPT is not infallible, Oxford’s Wooldridge compares its output to well-written undergraduate work. For example, when asked “what is artificial general intelligence” the chatbot responds, “It refers to a type of artificial intelligence that is capable of understanding or learning any intellectual task that a human being can, In other words, AGI is a type of A I that is able to perform any cognitive function that a human being can, rather than being limited to a specific set of tasks.” This level of output poses a threat to those at the lower end of the employment market. According to the Office for National Statistics(ONS), around 1.5 million jobs nationwide can be automated away, with those at greatest risk including restaurant waiters,

Those least likely to sec machines taking over their jobs include legal professionals, doctors and university lecturers. Such occupations are classed as highly skilled. The ONS says, “There is not so much that robots are taking over, but that routine and repetitive tasks which can be carried out more quickly and efficiently by an algorithm written by a human, or a machine designed for one specific function.”

The chairman of Parliament’s Business Committee, Darren Jones, hails Chat GPT as the “start of a new trend” in sophisticated AI tech. He says, “It will become common practice to use tools like this at work with time.”

【小题1】What is the function of Chat GPT?
A.To help humans order food from restaurants.
B.To answer questions and solve problems for humans.
C.To automate away all human jobs sooner or later.
D.To accompany human beings by chatting with them.
【小题2】What is the fourth paragraph mainly about?
A.ChatGPT’s output can be compared with undergraduate work.
B.ChatGPT could threaten lower-end jobs potentially.
C.It explains what artificial general intelligence is.
D.It illustrates that Chat GPT is limited to a specific set of tasks.
【小题3】According to this passage, which of the following careers are most likely to be replaced by ChatGPT?
A.Doctors.B.Lawyers.
C.Musicians.D.Warehouse Keepers.
【小题4】What is the best title for the text?
A.ChatGPT, a Powerful Chatbot Posing Threats to Lower-End Jobs
B.AGI, a Unique Type of AI Performing Cognitive Function
C.AGI, an Outdated AI Technology Taking Over All Jobs
D.ChatGPT, a Routine Feature of Our Daily Life for Years

It's already challenging enough for environmentalists to keep beaches clear of washed up trash(垃圾) and plastic debris(残骸), but the most difficult problem lies in cleaning up all of the millions of tiny microplastics that are impossible to pick up and separate from the sand.

Fortunately, a group of engineering students succeeded in developing a massive new vacuum cleaner that can collect microplastics without removing any of the sand from the beach. The 12 Canadian students from the University of Sherbrooke in Quebec built their Hoola One plastic vacuum cleaner as a class project.

"We did some research and we realized there was no machine around the world to do this kind of job," Hoola One co-founder Sam Duval told Hawaii Public Radio. "So we told each other, 'We will invent it,' and we did it."

As a means of testing their machine's efficiency, they recently used it on the sands of Hawaii's Kamilo Beach, which is also notorious for being one of the dirtiest beaches in the world. Though their first prototype(原型)experienced a number of technical issues, the students managed to fix the problems and tidy up the beach.

Using a handheld tube, the machine sucks(吸入)up plastic and sand and dumps them all into a massive tank of water. Since rocks and sand are heavier than plastic, they sink to the bottom of the tank so they can be dumped back onto the beach. The plastic, on the other hand, floats to the top of the tank.

According to Hawaii Public Radio, the team left the Hoola One vacuum on the island as a donation to the state department- They are now researching the ecological effects of the vacuum on the beach while they search for funding and sponsorships(赞助)to produce more Hoola One vacuums.

【小题1】What is the hardest problem of keeping the beach clean?
A.Picking up plastic debris.
B.Removing trash on the sea.
C.Separating plastics from the sand.
D.Clearing up all the microplastics.
【小题2】What do we know about the Hoola One plastic vacuum cleaner?
A.It can collect plastics without removing sand from the beach.
B.It has been used widely on the beaches around the world.
C.The students tested its efficiency on Hawaii's Kamilo Beach.
D.The students gave up the first prototype due to several failures.
【小题3】What is Paragraph 5 mainly about?
A.The working procedure of the vacuum cleaner.
B.The invention process of the vacuum cleaner.
C.The ecological impacts of the vacuum cleaner.
D.The special materials of the vacuum cleaner.
【小题4】What words can best describe the 12 Canadian students?
A.Generous and stubborn.B.Confident and persistent.
C.Devoted and wealthy.D.Admirable and humorous.

It's no secret that mountain climbing comes with various risks, but some are looking toward an unconventional means of reducing the dangers associated with the sport: jetpacks. A company called Gravity Industries designs what they call “Jet Suits”, a wearable technology that allows its users to fly through the air with a pack on their back and arm-based thrusters (助推器).

A recently conducted test flight involved a pilot demonstrating how quickly the jet suit can be used to climb up to a peak. The pilot covered 1.2 miles with 2,200 feet of vertical gain in just 3 minutes, 30 seconds. That's basically equal to the 0.9 mile, 2,000-foot-gain Manitou Incline climb in Colorado, plus a little more.

Though the recreational use of the jet suit to climb popular mountains would surely be met with outrage (愤怒) from the local hiking community, there's one application that might be considered quite a bit more acceptable, even praised: using the suit to speed up search and rescue operations.

While the technology is still relatively new and access is quite limited, a video of a mountainside test flight, showing the device pushing its pilot up steep terrain (地势) at a height of about 20 feet off the ground, might provide a glimpse at what the future of search and rescue operations in remote areas could look like. Not only could these suits be used to land rescuers in places that might be unsafe for a helicopter, but they could also allow for rapid search of large areas.

All of that sounds great, though the price may still be a bit restrictive for widespread use among Colorado’s search and rescue teams at the moment. While there’s not much information on the Gravity Industries website about the price of a unit, one 2021 article put it at $ 440, 000.

For now, it's extremely unlikely that a jet suit will be spotted rushing to someone's time aid the next time you're out on the trail. But the creation of jet suits seems to reflect another step toward a real-world and life-saving application of what was once thought to be nothing more than a science-fiction device: the jetpack.

【小题1】How did the author clarify the speed of the pilot in the test flight?
A.By giving examples.B.By making a comparison.
C.By explaining a concept.D.By analyzing causes and effects.
【小题2】What is the main idea of paragraph 4?
A.The result of a test flight.B.The danger of a helicopter.
C.The limitation of the jetpack.D.The potential application of the jetpack.
【小题3】What can we know about the jetpack?
A.It might be unaffordable for a majority of people.
B.It is unsafe to wear the suit to carry out rescue tasks.
C.It could help predict the development of all the rescue jobs.
D.It can push pilots up steep terrain 20 meters off the ground.
【小题4】What is the author's attitude to the future of the jetpack?
A.Doubtful.B.Unclear.C.Dismissive.D.Hopeful.

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