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题型:阅读理解 题类:常考题 难易度:普通

新人教版2020-2021学年高中英语必修第三册Unit 1 单元测评习题

阅读理解

Almost every second of every day an older adult falls in the United States. That's approximately 29 million falls per year and nearly 27, 000 deaths, according to the Centers for Disease Control and Prevention.

Still in the stating stage, the Active Pelvis Orthosis (APO) system in Switzerland wants to make a lightweight, wearable exoskeleton (外骨骼) that could detect signs of balance loss and assist with balance recovery to keep the elderly wearer from falling, only when needed.

Other exoskeletons, either in development or on the market today, assist with movement and make heavy objects feel lighter. Mobility-impaired people can walk again. But none of these devices predict what the wearer is going to do next and take measures to correct an unsteady move.

The 3 kilogram (6. 7 pound) exoskeleton was built entirely from scratch by the research team and is designed to be worn on the lower half of the body. A waistband connects to two movable carbon fiber braces (支架), each one positioned on the outer side of a leg. Tiny motors and so-called "adaptive oscillators" (适配振荡器) in the computer circuits use a special process to detect the wearer's unique paces. That part takes just a few minutes.

While wearing the exoskeleton, a person may feel the braces and the motors pushing slightly on their legs. If their paces go against normal, the motors create a force in the braces that cause them to stiffen up and push a little more strongly against the legs, which provides stability.

In the next three years, the APO hopes to develop something that is commercially available.

(1)、Why is the new exoskeletoninvented?
A、Toslowerusers'walkingpaces. B、Toimproveusers'walkingability. C、Topromoteusers'senseofbalance. D、Topreventusersfromfalling.
(2)、What's the feature of the new exoskeleton?
A、It keeps users warm. B、It is worn on the back. C、It helps users move around. D、It corrects an unsteady move.
(3)、What does Paragraph 4 mainly talk about?
A、How the new exoskeleton works. B、Where the braces are positioned. C、How long it takes to detect the user's paces. D、What the new exoskeleton was built from.
(4)、What is the purpose of the author in writing this text?
A、To call on care for the elderly. B、To introduce a new invention. C、To advertise new device. D、To bring hope for the elderly.
举一反三
阅读理解

    The Women's Institute is urging supermarkets to do more to help consumers reduce their home food waste, after a survey of its own membership showed widespread confusion about “best before” and “use by” labeling(标签) on packaging.

    Its new analysis of products on supermarket shelves found that “once-opened” instructions were often contradictory and often failed to make clear whether they were a guide to food safety or quality. Only 45% of 5,000 WI members surveyed understood that best-before dates were a sign of food quality, while 26% did not understand that the more important use-by dates were a decisive guide to food safety.

    In its report on food waste, the WI said supermarkets were “potentially contributing to home food waste by leading customers to buy more food than they need, and giving conflicting and confusing on-pack information that leaves customers unsure about how long a product remains safe to eat in the home setting”. The 42-page report is part of the WI's ongoing campaign to reduce food waste. To underline the point about conflicting information, it cites(引用) a can of Sainsbury's own-brand sweetcorn advising consumers to eat it within one day of opening, while a similar tin from Waitrose gave consumers two days to finish it. Green Giant sweetcorn, however, has no specified date for eating once opened.

    Marylyn Haines Evans, chair of the Women's Institute's public affairs said: “WI members are some of the more informed members of society about food and cookery, but they are still confused about food labelling and 'once-opened' information. So we would like supermarkets to extend the amount of time that consumers have to use a product in their homes by making all of their once-opened instructions on product packaging consistent, and completely remove once-opened instructions on products where food safety is not an issue.”

阅读理解

    If you want to learn anything at school, you need to listen to your teachers. Unfortunately, millions of kids can't hear what their teachers are saying. And it's not because these students are goofing off. Often, it's the room's fault. Building architecture and building design can create echo(回声)-filled classrooms that make hearing difficult.

    Children with hearing impairments(损伤)suffer most from noisy classrooms. They sometimes can't hear questions that other students ask in class. Compared with kids with healthy hearing, they have a harder time picking up new vocabulary words by hearing them in talking.

    Even kids with normal hearing have a harder time in the classroom when there's too much noise. Younger children in particular have trouble separating important sounds – like a teacher's voice – from background noise. Kids with learning disabilities and speech impediments(障碍)and kids for whom English is a second language also have a harder time learning in noisy situations.

    In recent years, scientists who study sound have been asking schools to reduce background noise, which may include loud air-conditioners and pipes. They're also targeting outdoor noises, such as highway traffic. Noise reduction is a big deal. Why? Because quieter classrooms might make you smarter by letting you hear your lessons better.

    “It's so obvious that we should have quiet rooms that allow for access to the lesson,” says Dan Ostergren, a hearing scientist. “Sometimes it surprises me that we spend so much time discussing this topic. I just want to go. Why is this hard for anyone to grasp?”

阅读理解

    School days are supposed to be the best days of your life and part of that experience usually involves some unforgettable physical activities. I asked some people to give me their memories of what happened to them on the sports field and beyond, and this is what they told me.

    Cup winners

    When I was about ten, the football team from our year unexplainably made it to the cup final of the local schools' league. I say unexplainably because I only remember us losing nearly every match we played. Anyway, in the final I set up the winning goal, a brilliant cross to my mate David who headed the ball in just before the final whistle. I still have a photograph of the team holding the cup.

    Forest hike

    I remember having to lead a group of eight boys on a school expedition for the best part of two days when I was a teenager. Even though we got lost at one point, I managed to keep them all together and get them from one end of a large forest to the other and back by sheer(纯粹的)force of will. I was chosen to be the leader, I think, because I was the only one who knew how to read a map!

    When we arrived back at the campsite, we found out that all the other groups had cheated and hitched(搭便车)most of the way instead… I felt a bit stupid, but also rather proud of myself at the same time for having done it properly.

    Learning to swim, learning to drown

    I learned to swim comparatively late, I suppose. I was maybe nine years old but my brother had a painful experience which nearly put him off for life. We lived in the USA for a while and had access to a university pool where the coaches had trained the American Olympic team. In those days, though, their idea of teaching kids how to swim was to tie a can to their ankles with a bit of string, throw them in the deep end and shout "Swim!". I am surprised my brother survived at all. He could only have been about six at the time.

阅读短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

    Owen Williams and his wife befriended their eighty-year-old neighbor, Ken Watson, when they moved into their home in Wales three years ago. When their daughter, Cadi, was born a year later, Watson became a grandfather figure, taking the time to drop off Christmas presents for the child. Watson died in October.

    On Monday, Watson's daughter stopped by the Williams home with a large bag containing 14 wrapped Christmas presents her father had bought and wrapped for Cadi.

    Williams posted notes about what happened on Twitter to spread some Christmas spirit. He wrote that he wasn't sure whether he should give his daughter all the presents now, or hold onto them and give her one a year. Twitter responded in a big way, with many saying the story brought them to tears. So many people weighed in about the gifts, in fact, that Williams made a Twitter poll. So far, more than 55, 000 people have voted on how he should distribute the gifts.

    Williams, who is a social-media consultant, said the majority of people are voting for giving Cadi one present a year. He said he has no idea what is in the packages, but he's leaning toward listening to the will of the voters. "I think we're going to turn it into a Christmas story for our daughter," he said. "We'll do one a year for the next 14 years. It feels like the right thing to do now. If she opens a box of Lego when she's 16 then so be it."

    He said he was struck by how many people have responded by saying their neighbors are virtual strangers to them. "The thing that stands out to me is how few people know their neighbors," Williams said. "People are saying, 'That's so lovely. I don't even know my neighbors.' … This Christmas, take your neighbors a bottle of wine or a small gift, a token. Just say, 'Hi.' You can open a new world like we did."

阅读理解

Babies made from three people approved in UK

    Babies made from two women and one man have been approved by the UK's fertility regulator. The historic and controversial move is to prevent children from being born with deadly genetic diseases.

    Doctors in Newcastle — who developed the advanced form of In Vitro Fertilization or IVF (人工授精) — are expected to be the first to offer the procedure and have already appealed for donor eggs. The first such child could be born, at the earliest, by the end of 2017.

    Some families have lost multiple children to incurable mitochondrial (线粒体的) diseases, which can leave people with insufficient energy to keep their heart beating.

    The diseases are passed down from only the mother, so a technique using a donor egg as well as the mother's egg and father's sperm has been developed.

    The resulting child has a tiny amount of their DNA from the donor, but the procedure is legal and reviews say it is ethical (伦理的) and scientifically ready.

    "It is a decision of historic importance," said Sally Cheshire, chairwoman of the Human Fertilisation and Embryology Authority (HFEA). "I'm sure patients will be really pleased by what we've decided today."

    But some scientists have questioned the ethics of the technique, saying it could open the door to genetically-modified(转基因) 'designer' babies.

    The HFEA must approve every clinic and every patient before the procedure can take place. Three-person babies have been allowed only in cases where the risk of a child developing mitochondrial disease is very high.

    Prof Mary Herbert, from the Newcastle Fertility Centre, said, "It is enormously pleasing that our many years of research in this area can finally be applied to help families affected by these devastating diseases".

    "Now that we are moving forward towards clinical treatments, we will also need donors to donate eggs for use in treatment to prevent affected women transmitting disease to their children."

    Prof Sir Doug Turnbull, the director of the Welcome Centre for Mitochondrial Research at Newcastle University, said, "We are delighted by today's decision. We will also provide long-term follow up of any children born."

    NHS England has agreed to fund the treatment costs of the first trial of three-person IVF for those women who meet the HFEA criteria, as long as they agree to long-term follow up of their children after they are born.

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