試卷征集
加入會(huì)員
操作視頻

The world's elderly population is increasing.The number of old people,those who are aged 60 years or older,is expected to more than double in 2050 and is growing faster than the number of all younger age groups across the globe.This trend comes with an increasing demand for caregivers who are able to provide 24-hour care,not only at hospitals or nursing homes,but also at private homes and apartments.
   Robotic assistants are expected to become increasingly marketable and reach 450,000 by 2045 because of the expected caregiver shortage in the United States.But Professor Ramses Martinez says,"Unfortunately,the outside hard structure(結(jié)構(gòu))of recent care-giving robots prevents them from getting along well with each other safely.After all,would you leave old people who are physically or mentally ill in the hands of a robot?"
   Recent advances in material science have enabled the fabrication(制造)of robots with bodies that have the ability to reshape themselves when touched.But the complex design,fabrication,and control of soft robots recently hamper people from commercializing this technology and using them at home.
   Martinez and the colleagues have developed a new design method that may enable the quick design and fabrication of soft robots using a 3 D printer.The design process needs a few steps.First,a user makes a computer-aided design(CAD)file with the shape of the robot.The user then paints the CAD file to show which directions the different joints of the soft robot will move at.Finally a fast computer program takes a few seconds to change the CAD model into a 3 D architected soft machine printed by a 3 D printer.The architected soft robots move like humans,except that instead of muscles(肌肉),they rely on tiny motors that pull ropes tied to the ends of their hands and legs.They can be squeezed and pulled to more than 900 percent of their initial length."They can perform complex movements with ease,and this work makes a step forward toward the development of autonomous soft robots." Martinez says.The technology is patented.The researchers are looking for partners to test and commercialize their technology.

(1)What does the author mainly want to express in Paragraph 1?
A
A

A.That more and more nursing people will be needed!
B.That more hospitals will be built in the future.
C.That the burden on young people will increase greatly.
D.That private homes will be more suitable for the old.
(2)What can be inferred from Professor Ramses Martinez's words?
D
D

A.Robots have played a big role in humans' life.
B.Robotic assistants' characteristics have changed a lot.
C.Robots don't know how to communicate with each other.
D.Present care-giving robots aren't very suitable for the old.
(3)What's the main idea of Paragraph 4?
A
A

A.The procedure for designing the soft robots.
B.The importance of CAD files to the soft robots.
C.The steps of the soft robots to finish some work.
D.The characteristics and application of the soft robots.
(4)What advantage do the architected soft robots have over the conventional ones?
D
D

A.Being much cheaper.
B.Being more solid.
C.Being much lighter in weight.
D.Being more flexible in their movements.

【考點(diǎn)】環(huán)境保護(hù);說(shuō)明文
【答案】A;D;A;D
【解答】
【點(diǎn)評(píng)】
聲明:本試題解析著作權(quán)屬菁優(yōu)網(wǎng)所有,未經(jīng)書(shū)面同意,不得復(fù)制發(fā)布。
發(fā)布:2024/5/27 14:0:0組卷:1引用:1難度:0.5
相似題
  • 1.More than half of the food produced in Canada goes to waste.A shocking new study has shown that the level of food waste is far worse than previously thought,at 58%.Of that,about 85% of food waste is due to food processors.This differs from earlier studies,which criticized families for driving food waste and said they were responsible for 51% of food waste.
       The study was carried out by Martin Hooch,the leading expert on food waste and the author of several previous studies on the subject.Reflecting on the study's findings,Hooch said,"It means stopping criticizing consumers.Sure,consumers are part of the problem,but they're not the problem."
        In the past,Hooch didn't master good data,particularly from the private factories,but relied on numbers collected by the food industry for purposes other than tracking(追蹤) waste.This time,however,Hooch worked directly with companies at all stages along the food production chain and interviewed over 700 experts in the industry.Clearly he found it hard to believe what he was seeing.
       This is what they found:Food processing causes 34% of food waste.This is followed by production,which causes 24%.Next is manufacturing at 13%,then hotels and restaurants at 9%.Families cause only 14%,and market sales 6%.This should be a serious wake-up call for Canadians who would do well to examine their own food supply chains.Food waste is costly,not only in terms of dollars wasted,but also in resources like land,water,and so on.To be using these resources and wasting the product is totally irresponsible and unnecessary.
       To make matters worse,when food is thrown into rubbish cans,it produces methane,a greenhouse gas 30 times more powerful than carbon dioxide (CO2).At Canada's rate of food waste,that's like adding 12 million cars to the road.It seems that the food industry needs redesigning.Therefore,let's hope the government takes action.

    (1)What did earlier studies say about food waste in Canada?

    A.Food waste was better than expected.
    B.Food went bad when it was processed.
    C.Most of the food was wasted on purpose.
    D.Families were to blame for food waste.
    (2)How did Hooch do his study on food waste this time?

    A.By studying data from the industry.
    B.By tracking the whole production chain.
    C.By collecting advice from experts worldwide.
    D.By drawing a conclusion from the previous studies.
    (3)Why does food waste have an effect on the environment?

    A.Because it is harmful to the trees.
    B.Because it pollutes the soil around it.
    C.Because it gives off unpleasant smells.
    D.Because it produces more greenhouse gas.
    (4)What is the main idea of the text?

    A.Canadians don't like to save food for future.
    B.More than half of the food is wasted in Canada.
    C.Families are mainly responsible for food waste.
    D.The food industry is better redesigned in Canada.

    發(fā)布:2024/12/5 0:0:1組卷:9引用:5難度:0.5
  • 2.Longjing tea,(1)
    has topped the list of the ten most famous teas in China with its color,taste and shape,(2)
    (name) after its region of production - Longjing Village of West Lake.The good environment and water resources are good for the(3)
    (grow) of the tea,confirming (證實(shí)) the saying that "Longjing tea is the (4)
    (good) among all of the teas in the world".
        Thanks (5)
    Emperor Qianlong of the Qing Dynasty,the tea has earned a high reputation.It is said that Emperor Qianlong visited a mountain of Longjing Village of West Lake on his travels in Hangzhou,and he saw some ladies picking the tea at(6)
    foot of the mountain.He was so interested in their movements that he decided to have a go himself.
        While (7)
    (pick) the tea,he received the news of his mother's illness,so he carelessly put the leaves in his pocket and(8)
    (leave) Hangzhou for Beijing.He visited his mother (9)
    (immediate) upon his arrival in Beijing,and his mother smelt the pleasant smell of the tea leaves from his pocket and wanted to have a taste.After drinking a cup of tea,she found herself completely (10)
    (energy),and she even praised it as a cure for all illnesses.

    發(fā)布:2024/11/20 13:30:1組卷:101引用:9難度:0.6
  • 3.It's just another day for William Lindesay.It begins by spending some time with his sons …and the Great Wall of China.He has lost count of the number of times he(1)
    (climb) the wall.However,he still remembers the day he first saw(2)

        The UK native first came to China in 1986 with(3)
    (plan) to run the wall's entire(4)
    (long),but it didn't quite work out that time.He came back a year later and fulfilled his dream,before finally (5)
    (settle) in China in 1990.Lindesay has had eight books on the Great Wall(6)
    (publish) over the years.He has completed three photo projects that show(7)
    it has changed with the passage of time and led conservation efforts to protect it.Now he and his Chinese friends are using drones(無(wú)人機(jī))(8)
    (film) the Great Wall,which provides a(9)
    (complete) new and fascinating perspective.
        In many ways,the Great Wall has defined Lindesay's life.His solo adventure was described as "the most successful foreign exploration of the Great Wall".He even received a medal(10)
    the Chinese government for his conservation efforts.

    發(fā)布:2024/12/17 12:2:24組卷:60引用:3難度:0.5
小程序二維碼
把好題分享給你的好友吧~~
APP開(kāi)發(fā)者:深圳市菁優(yōu)智慧教育股份有限公司| 應(yīng)用名稱(chēng):菁優(yōu)網(wǎng) | 應(yīng)用版本:5.0.7 |隱私協(xié)議|第三方SDK|用戶(hù)服務(wù)條款
本網(wǎng)部分資源來(lái)源于會(huì)員上傳,除本網(wǎng)組織的資源外,版權(quán)歸原作者所有,如有侵犯版權(quán),請(qǐng)立刻和本網(wǎng)聯(lián)系并提供證據(jù),本網(wǎng)將在三個(gè)工作日內(nèi)改正