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题型:阅读理解-阅读单选 难度:0.65 引用次数:64 题号:11592781

People feel good about recycling, maybe even more so when it comes to electronics. While electronics recycling isn’t bad, making it a panacea(万能药) for the e-waste problem we currently have certainly is. Unfortunately, that’s how we think of recycling and companies are eager to jump on that trend to appear more “green”.

A case in point: Apple. In 2016, there was lots of report on Liam, a robot able to dismantle(拆解) an iPhone in just 11 seconds--- a good way to recycle 1.2 million units a year. That sounds amazing until you take into account the fact that Apple had actually sold 231 million new iPhones the year before. Actually, Liam is the perfect symbol for recycling in the field of high-tech: a drop of green water in an ocean of pollution.

According to a recent UN report, the US produces about 6.3 million tons or 14% of the world’s electronic waste. Worldwide, almost 45 million tons of electronic waste were produced in 2016. Among them, only 20% has been recycled in some shape or form. The remaining 80% made its way to a more environmentally damaging end at the landfill(垃圾清理场).

Of course, we can say it’s time to double our recycling efforts. However, the huge amount of e-waste is impossible to deal with. The UN report points out that while there is an increased focus on recycling today compared to the past, the efforts to reuse used devices simply can’t keep pace with the high consumption rates for new devices.

And in their environmental responsibilities report, Apple admits that 77% of the carbon footprint of their electronics comes from its actual use. The environmental effect of replacing a device, even if it is recycled after, remains significant.

1. What’s the author concerned about according to Paragragh 1?
A.Some recycling turns out to be harmful
B.People have too much faith in recycling
C.Companies bear a high cost to be green
D.The e-waste problem is out of control
2. What may worsen the e-waste problem?
A.Few reports on the issue
B.Low quality of equipment
C.Difficult recycling progress
D.High demand for new electronics.
3. What does the author want to tell us?
A.The ways to lead a green life.
B.The limitation of electronics recycling
C.The responsibilities Apple should take on
D.The importance of protecting the environment.

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【推荐1】A new study has found that a child’s reading speed can be improved by simply increasing the space between letters within a piece of text. The research, led by Dr Steven Stagg of Anglia Ruskin University (ARU), examined the benefits of letter spacing and coloured overlays (颜色标注) among children.

Two groups of children, dyslexic (有阅读障碍的) and non-dyslexic children, were asked to read four texts with either standard or extra-large letter spacing, both with and without a coloured overlay. They were instructed to read the text out loud while being recorded. The recording was used to measure the number of errors they made — specifically missed words, added words, wrong words, and pronunciation — as well as the participants’ reading time.

The study discovered that text with increased space between letters provided a benefit for both groups. On average, the dyslexia group showed a 13% increase in reading speed, while the group of non-dyslexic children showed a 5% increase. In addition to improving reading speed, it also resulted in a significant decline in the number of words missed by the children with dyslexia. However, the study found that coloured overlays had no significant impact on reading speed or the reduction of errors for either group.

Dr Stagg, Senior Lecturer in Psychology at ARU, said, “We believe extra-large letter spacing works by reducing what is known as the ‘crowding effect’, which can hamper the recognition of letters and reduce reading speed.”

“Our findings strongly suggest that teachers can be confident that all children would be helped by increased letter spacing in reading materials.” Dr Stagg added. While we found that coloured overlays provided little benefit, we suggest children should be encouraged to use overlays if they find these help their reading. Coloured overlays may not increase reading speeds, but they may extend reading stamina (持久力). Previous research suggests their benefits may not become apparent if reading time is less than 10 minutes and the short reading duration of the tests in our study may have put coloured overlays at a disadvantage.

1. Which of the following best describes the research process in paragraph 2?
A.Illustrate, group and report.B.Read, instruct and measure.
C.Question, assume and prove.D.Categorize, record and count.
2. What can we learn about increased letter spacing from paragraph 3?
A.It reduces reading errors.B.It sharpens reading skills.
C.It arouses reading interest.D.It enhances reading comprehension.
3. What does the underlined word “hamper” in paragraph 4 probably mean?
A.Obtain.B.Prevent.C.Change.D.Involve.
4. What can be inferred about coloured overlays from paragraph 5?
A.They might work better in short reading.
B.They might not be recommended by experts.
C.They might not have been evaluated fairly.
D.They might have some disadvantages.
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【推荐2】We all love spending time by the sea. Some lucky ones might live on the coast and enjoy the benefits (益处) all around the year.     1     Most of us would say we feel healthier by the ocean. In the past, doctors would actually suggest spending time by the sea to their patients. And research has shown that people who live on the coast are more likely to believe their health is good compared to those living in a city. So how do we benefit, exactly?

Well, to start with, it’s great for our mental (心理) health. Scientists have discovered that we have something called a blue mind. They have shown that watching, listening to the waves (海浪) or being in the ocean helps our brains slow down.     2    . This is why people who have trouble sleeping are often told to listen to recordings of the sound of waves hitting the beach to help them relax at bedtime.

    3    . We go out a lot more when we’re on holiday by the sea. We often become more active on holidays and people who live on the coast are usually more active too.     4    . Walking on sand-requires more effort than on the pavement. And the sea air is good for people with breathing problems too. There is less pollution in the air near the ocean and in autumn and winter the air is fresher. This is healthier than the dry air in homes with central heating. It has even been found that the chemicals in sea water may help us have healthy skin.

    5    . We look forward so much to having our next one!

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【推荐3】Whether it’s a cup of coffee, a cup of hot tea, or a bottle of soda, consuming caffeine (咖啡因) is a good choice for millions who want to wake up or stay up. Now, researchers at Johns Hopkins University have found its another use: improving our memory.

“We’ve always known that caffeine has effects on raising cognitive (认知的) abilities, but its particular effect on strengthening memory has never been proved,” said Michael Yassa, one of the scientists of the research team.

The researchers conducted a double-blind trial in which participants who did not regularly eat or drink products consisting of caffeine received either a placebo (安慰剂) or a caffeine pill five minutes after studying a series of pictures. The next day, both groups were tested on their ability to recognize pictures from the previous day’s study session. On the test, some of the pictures were the same as those from the day before, and some were new additions which were similar but not the same.

More members of the caffeine group were able to correctly identify the new pictures as “similar” to previously viewed pictures rather than mistakenly see them as the same. The brain’s ability to recognize the difference between two similar but not the same items reflected better memory, the researchers said.

“If we used a standard recognition memory task without these similar items, we would have found no effect of caffeine,” Yassa said. “However, using these items requires the brain to make a more difficult discrimination — what we call pattern separation, which seems to be the process that is improved by caffeine in our case.”

“Almost all the previous studies distributed caffeine before the study session, so if there is an improvement, it’s not clear whether it’s due to caffeine’s effects on attention, focus, or other factors,” Yassa said. “By offering caffeine after the study session, we rule out all of these effects and make sure that if there is an improvement, it's due to memory and nothing else.”

1. Which paragraph mainly tells the process of the experiment in detail?
A.Paragraph 2.B.Paragraph 3.C.Paragraph 4.D.Paragraph 5.
2. Why did the researchers use similar pictures?
A.To measure participants’ attention.B.To test participants’ ability to learn.
C.To add the difficulty of discrimination.D.To further explain pattern separation.
3. How is this experiment different from the previous ones?
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C.Participants studied the pictures after a long break.D.Participants took in caffeine after studying the pictures.
4. The purpose of the experiment is to prove caffeine ________.
A.helps people stay energeticB.strengthens learning ability
C.does harm to cognitive abilitiesD.has a positive effect on memory
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