The negative health impacts of plastic on both wildlife and humans have been well documented. Recycling contributes to settling the problem. However, the material coming from the plastic recycled using the traditional technology is of lower quality and can only be used a few times for items like clothing or carpets before it has to be thrown away.
Now, French start-up Carbios wants to help alleviate the world’s plastic pollution with a bacterial enzyme (细菌酶) that “eats” PET—the most plentiful plastic used to produce packaging and plastic bottles. The enzyme is able to downgrade 90% of a ton of plastic in less than 10 hours. And the resulting material can be used to create anything and, more importantly, can be continuously recycled.
To break down the plastic, the waste is placed in a reactor with water and the enzyme and heated for 16 hours at 65℃. The resulting mix is then filtered (过滤) and purified (净化). This allows for the recovery of the building blocks that make up PET. These building blocks are then remade into new plastic and transformed into bottles and other items, without having to use more resources.
The recycling process will be tested in a larger range at a new, bigger facility in Lyon, France, by the end of 2021. Once all the problems have been removed, Carbios hopes to bring the technology on the market by 2024.
Though Carbios’s recycling technique will certainly help reduce plastic pollution, Stephan believes it is only part of the solution. We can only win the battle if we do a better job of ensuring that plastic waste does not end up in the environment or in landfills. So the next time you use a plastic bottle, be sure to make the extra effort to place it in a recycling bin.
1.What does the underlined word “alleviate” in paragraph 2 mean?
A.Cut down. B.Reflect on.
C.Keep records of. D.Watch out for.
2.What is the main characteristic of the material produced by enzyme?
A.It can resist bacteria. B.It can stand high temperatures.
C.It can be sustainably used. D.It is harmless to the environment.
3.What does paragraph 3 mainly tell us?
A.The sources of the bacterial enzyme.
B.The process of producing plastic bottles.
C.How the bacterial enzyme breaks down PET.
D.How waste plastic is recycled with the bacterial enzyme.
4.Which statement agrees with the text?
A.The new technology has been put to wide use.
B.Traditional plastic is easily storable and affordable.
C.The promising enzymes technology is in the experimental stage.
D.Bacterial enzymes will completely solve the problem of plastic pollution.
高一英语阅读选择中等难度题
The negative health impacts of plastic on both wildlife and humans have been well documented. Recycling contributes to settling the problem. However, the material coming from the plastic recycled using the traditional technology is of lower quality and can only be used a few times for items like clothing or carpets before it has to be thrown away.
Now, French start-up Carbios wants to help alleviate the world’s plastic pollution with a bacterial enzyme (细菌酶) that “eats” PET—the most plentiful plastic used to produce packaging and plastic bottles. The enzyme is able to downgrade 90% of a ton of plastic in less than 10 hours. And the resulting material can be used to create anything and, more importantly, can be continuously recycled.
To break down the plastic, the waste is placed in a reactor with water and the enzyme and heated for 16 hours at 65℃. The resulting mix is then filtered (过滤) and purified (净化). This allows for the recovery of the building blocks that make up PET. These building blocks are then remade into new plastic and transformed into bottles and other items, without having to use more resources.
The recycling process will be tested in a larger range at a new, bigger facility in Lyon, France, by the end of 2021. Once all the problems have been removed, Carbios hopes to bring the technology on the market by 2024.
Though Carbios’s recycling technique will certainly help reduce plastic pollution, Stephan believes it is only part of the solution. We can only win the battle if we do a better job of ensuring that plastic waste does not end up in the environment or in landfills. So the next time you use a plastic bottle, be sure to make the extra effort to place it in a recycling bin.
1.What does the underlined word “alleviate” in paragraph 2 mean?
A.Cut down. B.Reflect on.
C.Keep records of. D.Watch out for.
2.What is the main characteristic of the material produced by enzyme?
A.It can resist bacteria. B.It can stand high temperatures.
C.It can be sustainably used. D.It is harmless to the environment.
3.What does paragraph 3 mainly tell us?
A.The sources of the bacterial enzyme.
B.The process of producing plastic bottles.
C.How the bacterial enzyme breaks down PET.
D.How waste plastic is recycled with the bacterial enzyme.
4.Which statement agrees with the text?
A.The new technology has been put to wide use.
B.Traditional plastic is easily storable and affordable.
C.The promising enzymes technology is in the experimental stage.
D.Bacterial enzymes will completely solve the problem of plastic pollution.
高一英语阅读选择中等难度题查看答案及解析
[1] I was interested in different science fiction ideas and technologies. But there is one theme in science fiction that has always troubled me: when technology subverts (颠覆) its creators.
[2] I’ve been involved in dozens of technology projects. I have to admit that seldom in our design or business discussions have we spent much time on the possible negative impact of our work on the world. Instead, in most cases we just create technology because we see a need, or to solve a problem.
[3] Technology has been responsible for an age of distraction. Recently while driving from northern New York City to the Elmira area, I saw signs saying, “Next texting stop is three miles ahead. Don’t text and drive.” Most states have already outlawed texting while driving, and yet we hear almost weekly of traffic accidents caused by drivers tapping on smartphones. I don’t believe Steve Jobs and Apple dreamed that the iPhone, or smartphones in general, would give rise to this level of distraction.
[4] In a recent Harvard Business Review piece entitled “Liberal Arts (人文科学) in the Data Age,” the author writes about the importance of reconnecting humanism with engineering approach. Many of today’s engineers have been so focused on creating new technologies that their short term goals risk covering up unintended long-term outcomes. A few companies, such as Intel, are forward-thinking enough to include ethics (伦理学) professionals on their staff. At this point all tech companies should start getting serious about the need to hire people with backgrounds in areas such as psychology and philosophy (哲学).
[5] My hope is that we can all move a little more in creating technology that is both impactful and thoughtful in its engagement with our lives and the world.
1.What inspires people to create technologies according to the writer?
A.A desire to think and create. B.An interest in technology.
C.A need to settle a problem. D.An idea from science fiction.
2.Why is the example of “texting” mentioned in Paragraph 3?
A.To tell the arrival of a new age. B.To criticize wrong driving behaviors.
C.To stress Steve Jobs’ contributions. D.To show negative impact of technology.
3.Which of the following can best replace “give rise to” in Paragraph 3?
A.Cause. B.Resolve.
C.Confirm. D.Permit.
4.According to the writer, forward-thinking tech companies should ________.
A.value liberal arts professionals B.put huge profits first
C.focus on creating new technologies D.hire bookish engineers
5.What does the writer want to get across to readers?
A.The significance of Liberal Arts. B.Less dependence on technology.
C.The importance of humanism in technology. D.Diverse views on science fiction.
高一英语阅读选择中等难度题查看答案及解析
Nowadays, we live in a strict and judgmental world where people are quick to point out the faults of others and yet seem to ignore their own ones. Some misguided souls believe they have a moral duty to help you be a better person telling you what a failure you really are.
If you’re the one placing criticism upon others, please stop. Make a conscious decision, rather than focus on the negative aspect of a person’s performance or attitudes, and you can offer helpful suggestions. If I’m painting a living room and making a mess in doing so, I’d have my husband say to me, “This is a tough job. Can I offer a suggestion that might make it easier for you?” rather than have him point out what a careless painter I am.
If you’re on the receiving end of criticism, the “OK” response is a perfect solution. When someone comments negatively on a task you’re doing, the natural response is to defend and attack. However, this approach is rarely effective as it puts both parties on the defensive. It diffuses a potentially explosive situation. It’s important to keep calm and listen without feeling, to be an objective observer. There is much that one can learn from a negative review. You can ask yourself: Could I have done better, and been more thoughtful? Did I give 100% of myself to the task at hand? Is there any truth in what the other person says? If so, how can I improve?
In any event, one should remember the saying, “Stop judging and you will not be judged. Stop condemning(指责) and you will not be condemned.” One can learn to be “OK” with criticism and not allow it to negatively impact his or her relationship with the other party. Let it go and that will be “OK”.
1.According to the author, today’s people_____.
A.ignore the mistakes of others
B.focus on how to handle mistakes
C.like to point out the mistakes of others
D.have a moral duty to point out others’ faults
2.Which of the following best explains “diffuses” underlined in Paragraph 3?
A.spreads B.improves
C.reduces D.conveys
3.Which would be the best title for this passage?
A.Is criticism really necessary?
B.What can you learn from criticism?
C.What’s the best way to voice criticism?
D.How to criticize and reply to criticism?
高一英语阅读选择中等难度题查看答案及解析
Many of us spend part of each day surrounded by strangers, whether on our daily commute (上下班往返), or sitting in park or cafe. But most of them remain just that-strangers. However, new evidence has shown that plucking up (鼓起) the courage to strike up conversation might be good for our health.
Nicholas Epley from the University of Chicago and Juliana Schroeder from the University of California are behavioural scientists. They wanted to know whether solitude is a more positive experience than interacting with strangers, or if people misunderstand the consequences of distant social connections. They found that many people feel uncomfortable and frightened talking to others and their research suggested that when we make an initial conversation “we consistently underestimate (低估) how much a new person likes us.” It seems we think that all the things could go wrong and why someone wouldn’t want to talk with us.
Their research involved an experiment with a group of Chicago commuters and found that “every participant in our experiment who actually tried to talk to a stranger found the person sitting next to them was happy to chat.” From this and other research, the conclusion is that connecting with strangers is surprisingly pleasant and it has a positive impact on our wellbeing. It’s true that talking can make you feel happier and happiness can lead to better mental health.
However, if you’re’ an introvert (性格内向者), the thought of speaking to someone new might make you anxious. But the American research found “both extroverts (性格外向者) and introverts are happier when they are asked to behave in an extroverted manner.” So maybe, if you’re a loner, it’s time to come out of your shell and make some small talk with a stranger-it could be the beginning of a new friendship.
1.What does the underlined word“solitude”in paragraph 2 mean?
A.Being calm. B.Being pleasant. C.Being alone. D.Being healthy.
2.Why might we not want to speak to a stranger?
A.Because we don’t trust a new person.
B.Because we can’t find a common topic.
C.Because we like distant social connections.
D.Because we carry a negative voice in our head.
3.What could help start a new friendship?
A.Making a small talk. B.Sitting next to a stranger.
C.Sharing personal details. D.Behaving in polite manner.
4.Which of the following is the best title for the text?
A.How to be an extrovert. B.Talking to strangers.
C.How to speak to strangers. D.Making new friends.
高一英语阅读选择困难题查看答案及解析
Is there a link between social media and depression? Do social media have a negative impact on your mental health? It’s complicated.
In a recent study, the investigators compared social media use and depression between teens.
1.Specifically, for every hour per day that one teen spent on social media more than her peers, she likely had a 0.64 point higher depression score.
A different study published in 2018 identified five distinct types of social media users. The finding was that "problematic social media use" was one of the main themes for people whose mental health was affected by social media. You can have alcohol in your life without it being a problem, or your alcohol use may become problematic. 2.
There's one important thing to remember about survey research just because two things happen together, it's not necessarily true that one causes the other. 3.For all we know, it could be that people who are already more depressed choose to spend more time on social media.
4.If you think that we shouldn't paint social media with one broad brush, you're on the right track. On the one hand, participants often described social media as a valuable way to cope with stress. On the other hand, cyberbullying via social media was also a common experience for participants. Some also said that constantly checking their own social media profile was stressful.
It’s certainly possible that experiences like cyberbullying, comparing yourself to idealized images, and constantly monitoring your profile, are bad for your mood. It's also true for many that social media offer community support and positive messages. Given the inconclusive research, it's safe to say that at least we shouldn't write off social media altogether. 5.Anyway, you cannot use it as a crutch for coping with other stressors and mental health problems.
A.It's the same with social media.
B.Social media can be a double-edged sword.
C.People get more opinionated about the potential problems of social media.
D.They found that those who used social media more had higher depression scores.
E.They reviewed all existing research and found that there were both benefits and drawbacks.
F.The key to benefiting from social media may lie in using it in moderation and staying socially connected.
G.For example, just because higher social media use co-occurs with higher levels of depression doesn't mean social media use causes depression.
高一英语七选五中等难度题查看答案及解析
If you take a look around your kitchen or office right now, chances are that you’ll notice you’re surrounded by plastic—water bottles, to-go coffee cups, straws, plastic grocery bags, food wrappers, take-out containers, single-serve coffee pods and produce bags. 1.．
It’s certainly not realistic to remove all plastic from your life, but let’s examine some statistics that may encourage you to reduce your single-use plastic footprint by throwing away straws, switching to reusable water bottles, bringing cloth bags to the grocery store and more.
According to a study published in the journal Science Advances, the popularity of plastic, which began rising in the 1950s, is growing out of control. 2.．And there’s no sign of slowing down, considering scientists say that another 12 trillion kilograms will be produced worldwide by 2050.
“Every piece of plastic that has ever been created will remain in the environment in some form, but once we conveniently throw out our rubbish at home, wind and runoff carry our waste from landfills and streets to the ocean,” says Mystic Aquarium’s chief clinical veterinarian Jennifer Flower, DVM, MS. “Given that we are globally producing over 320 million tons of plastic annually, the marine environment is taking a big hit from our daily disposal of plastic.
3.. For example, newborn fish are mistaking tiny bits of plastic waste for food. If they die, there will be fewer big fish—and that could damage the food chain. Often our society is so focused on making our lives more convenient in the short term, but in the long run, our health and the health of marine life are at the expense of those everyday conveniences.”
4.．A recent report suggests that when heated, certain food additives (添加剂) can damage hormones, growth and development, as well as increase chances for children of being fat. 5.．It is found in plastic containers and metal cans. Parents are urged to avoid using microwaves to warm food and drinks or placing plastics in the dishwasher.
A.Using plastic containers in microwaves is also harmful to children’s health.
B.Our plastic consumption is directly affecting the life in the ocean.
C.8.2 trillion kilograms of plastic have been produced around the world.
D.People are concerned about the results of overusing plastic containers.
E.Let’s stop using plastic for the benefit of the environment and human beings.
F.The most concerning artificial additive BPA is a chemical used in the production of plastics.
G.These are all examples of single-use plastic products, which is a hot topic nowadays.
高一英语七选五中等难度题查看答案及解析
Carbon dioxide isn’t just a greenhouse gas that’s thinning the atmosphere, but it’s also causing a popular food to lose its nutritional value over time, which will have a major impact on more than 2 billion people worldwide.
According to a recent study conducted in a joint effort by researchers in Japan, China, Australian, and the United States, higher levels of carbon dioxide in the atmosphere contribute to the decline of protein（蛋白质）and other key vitamins in rice. The study, published in the journal Science Advances, looked at 18 different agriculture sites in China and Japan over four years and found that the crops exposed to higher levels of carbon dioxide were overall less nutritious than those that were not.
“Many basic crops are impacted by the rise of carbon dioxide with respect to things like protein concentration and iron and zinc,” says Lewis Ziska, a co-author and research plant physiologist at the US Department of Agriculture. The research explains that the exposed rice contained 10 percent less protein,8 percent less iron, and 5 percent less zinc, while amounts of B1,B2 and B5 vitamins also declined. And increased levels of carbon dioxide doesn’t just have a negative effect on rice, but other food staples（主食）including wheat and potatoes also face serious consequences when exposed to higher levels.
While this certainly impacts many people worldwide, it follows that the people that would suffer the most would be those that consume the most rice, which, as the study also found, also happen to be those who live in the poorest countries.
Additional studies are now underway and researchers are trying to solve this problem by looking at the different types of each crop in hopes of finding the types that react the least, or not at all, to high levels of carbon dioxide.
Until then, what can you do? For starters, you can try to eat a variety of foods and get your vitamins and proteins from various sources. Then to help with the larger problem of global warming and climate change, you can make simple lifestyle changes such as hang drying clothes, walking to work, and turning off the lights when you’re not home.
1.What is the effect of higher levels of carbon dioxide?
A.It increases protein content in rice. B.It causes nutrient loss in crops.
C.It improves agricultural productivity. D.It directly affects people’s health.
2.Who may suffer most from the rise of carbon dioxide?
A.Those who eat the most rice. B.Those who eat wheat and potatoes.
C.Those who live in rich countries. D.Those exposed to higher levels of carbon dioxide.
3.What does the underlined word“underway”in para.5 mean?
A.Under the ground B.Under control
C.In the way D.In progress
4.How can we solve the problem caused by higher levels of carbon dioxide?
A.By developing new types of crops.
B.By eating more fresh foods.
C.By having different types of foods.
D.By changing the existing lifestyle totally
高一英语阅读选择中等难度题查看答案及解析
Crossing your legs is an extremely common habit; most people don’t even notice that they’re doing it when they sit down. While you may find it comfortable to sit with one knee crossed over the other, it might be causing health problems that you are not aware of.
A study published in Blood Pressure Monitoring stated that sitting with your legs crossed can increase your blood pressure. The reason is that the blood in your legs has to work against gravity to be pumped back to your heart and that crossing one leg over the other increases resistance, making it even harder for the blood to circulate. This causes your body to increase your blood pressure to push the blood back to the heart. You won’t feel any immediate effects, but repeated, drawn-out increases in blood pressure can cause long term health problems. So, panning to sit for a long period of time? Don’t keep your legs crossed.
Crossing your legs at the knee can also cause pressure on the major nerve in your leg that passes just below your knee and along the outside of your leg, explains Richard Graves, a medical expert. This pressure can cause numbness and temporary paralysis of some of the muscles in your foot and leg, preventing you from being able to raise your ankle. While the feeling of discomfort may only last a minute or two, repeatedly crossing your legs until they feel numb can cause permanent nerve damage.
So next time you sit down, try to get yourself in the habit of sitting with both of your feet on the floor. Not only will it help your posture and stability, but it will also save your health in the long run.
1.What can we learn about crossing one’s legs?
A.It is a very bad social habit. B.It is usually practiced by design.
C.It can make others feel uncomfortable. D.It has a negative effect on people’s heath.
2.We may conclude from the study that sitting with your legs crossed can ________.
A.improve the function of legs B.help your blood resist gravity
C.effect your blood pressure D.cause health problems instantly
3.According to Richard Graves, repeatedly crossing your legs may ________.
A.paralyze all of your muscles B.preventing you from standing up
C.damage your nerve in the leg in the end D.reduce the pressure on the major nerve
4.What is the main purpose of the text?
A.To blame a bad habit. B.To provide suggestions.
C.To introduce research methods. D.To show effects of an experiment.
高一英语阅读选择中等难度题查看答案及解析
Tech giants Apple and Google are teaming up to create a system that would let smart phone users know when they've come into contact with someone who has COVID-19.
The technology would rely on the Bluetooth signals that smart phones can both send out and receive 1aperscn tests positive(阳性) for COVID-19, they could inform public health authorities through an app. Those public health apps would then warn anyone whose smart phones bad come tear the infected person's phone in the previous 14 days. The technology could be used on both Google Android phones and Apple iPhones.
The companies insist that they will preserve smart phone users' privacy and their technology will be used only by public health authorities to trace the spread of COVID-19. Smart phone users can choose to use it. The software will not collect data on users' physical locations or their personally identifiable information. People who test positive would remain unknown to the public, both to the people who came in contact with them and to Apple and Google. “Privacy is of greatest importance in this effort,” the companies said in a joint statement.
The American Civil Liberties Union has warmed that using cellphone data to handle the pandemic carries risks of “destruction of privacy”. In a statement on Friday, ACLU cyber security counsel Jennifer Granick said, The system also can't work well if people don’t trust it”. She said that the joint Apple and Google project “appears to reduce the worst privacy risks, but there is still room for improvement.” She added that the contact tracing app should be used only for public health purposes and only for the duration of this pandemic.
Public health officials say the contact tracing -finding people who have been in contact with an infected person will be a key step in lifting shelter in-place restrictions.
It would allow people who are known to have been exposed to the virus to isolate themselves, while letting others recover normal activities.
1.What is the main purpose of the passage?
A.To advertise for public health. B.To introduce a contact tracing system.
C.To warn the public of risks of COVID-19. D.To raise people's awareness of privacy protection.
2.What do the companies promise to do in particular?
A.Warn people who test positive. B.Protect infected people's privacy.
C.Work with public health authorities. D.Collect data on users physical locations.
3.What does the underlined sentence in Paragraph 4 suggest?
A.Public health issues are traced accurately. B.Only people's trust influences the system.
C.The system is at the risk of being destroyed. D.Jennifer thinks the system should be better.
4.The system is mainly designed to .
A.ensure infected people's recovery B.guarantee people's normal activities
C.help prevent the spread of COVID-19 D.encourage all the people to isolate themselves
高一英语阅读选择中等难度题查看答案及解析