A
(2020·河北省衡水中学高三下学期第一次模拟考试)
Scientists have developed a new type of smart bandage(绷带) that can signal the type of bacterial(细菌的) infection it’s protecting，just like a traffic light，as well as release the right type of drugs on demand.The traffic light system works just like this：Green means no bacteria or a low concentration of bacteria，yellow means drug-sensitive(DS) bacteria responsive to standard antibiotics(抗生素) and causes antibiotic release，and red means drug-resistant(DR) bacteria that need extra help to be wiped out.
In testing the bandage on mice，the research team was able to successfully treat both DS and DR infections using the new method.However，the common methods of sensing resistance are limited by time，the requirement for professional personnel，and expensive instruments.Moreover，the abuse of antibiotics causes the accelerated process of bacterial resistance.
It’s easy to see how a simple bandage and light could overcome some of these limitations.Treatment doesn’t have to wait for a doctor to make a diagnosis，and the bandage can get the right sort of drugs applied at the earliest opportunity.What’s more，the person wearing the bandage gets real-time feedback on what’s happening with the infection，if there’s an infection at all.The researchers say it offers numerous benefits over existing treatments that make use of light，including photodynamic therapy or PDT.
We’ve been seeing quite a few upgrades to the traditional bandage in recent years，thanks to advances in science — like the nanofiber mesh that attracts bacteria and draws some of it out，speeding up the healing process.Then there’s the novel bandage for treating burns，which stops bacteria from multiplying and lowers the risk of infection.
The more work that a bandage can do while it’s protecting a wound，the better.Efforts to improve bandages continue and now we’ve got a bandage that not only releases antibiotics，but also tells the patient exactly what’s going on too.
1．What is the smart bandage mainly designed to do?
A．Avoid the use of antibiotics.
B．Clear out harmful bacteria.
C．Detect bacterial infections.
D．Increase treatment options.
2．What is the advantage of the smart bandage?
A．It saves much time and cost.
B．It removes the risk of infection.
C．It prevents the bacterial resistance.
D．It improves doctor-patient relationship.
3．What can be inferred from the last two paragraphs?
A．Traditional bandages are out of use now.
B．More smart bandages will be developed.
C．Progress in science calls for more research.
D．People are urged to study medical science.
4．What does the text focus on?
A．A successful test on mice.
B．A colour-changing bandage.
C．Sensing drug-resistant bacteria.
D．Preventing abuse of antibiotics.
【答案】 1.C 2.A 3.B 4.B
【解析】 这是一篇说明文。文章主要说明了科学家们已经开发出一种新型的智能绷带，它可以像交通灯一样显示出它所保护的细菌感染类型，并根据需要释放出正确的药物类型。文章说明了这种绷带的优势以及预测未来的发展。
1．细节理解题。根据第一段中“Scientists have developed a new type of smart bandage (绷带) that can signal the type of bacterial (细菌的) infection it’s protecting，just like a traffic light，as well as release the right type of drugs on demand.”可知，科学家们已经开发出一种新型的智能绷带，它可以像交通灯一样显示出它所保护的细菌感染类型，并根据需要释放出正确的药物类型。由此可知，智能绷带的主要功能是检测细菌感染。故选C。
2．细节理解题。根据第二段中“However，the common methods of sensing resistance are limited by time，the requirement for professional personnel，and expensive instruments.”可知，然而，常用的电阻检测方法受到时间、专业人员的要求和昂贵仪器的限制。以及第三段第一句“It’s easy to see how a simple bandage and light could overcome some of these limitations.”可知，很容易看出一个简单的绷带和光可以克服这些限制。由此可知，智能绷带的优点是节省了很多时间和成本。故选A。
3．推理判断题。根据最后一段中“Efforts to improve bandages continue and now we’ve got a bandage that not only releases antibiotics，but also tells the patient exactly what’s going on too.”可知，改进绷带的努力仍在继续，现在我们有了一种绷带，不仅能释放抗生素，还能告诉病人到底发生了什么。由此可推知，更多的智能绷带将被开发。故选B。
4．推理判断题。根据第一段中“Scientists have developed a new type of smart bandage (绷带) that can signal the type of bacterial (细菌的) infection it’s protecting，just like a traffic light，as well as release the right type of drugs on demand.”可知，科学家们已经开发出一种新型的智能绷带，它可以像交通灯一样显示出它所保护的细菌感染类型，并根据需要释放出正确的药物类型。结合文章还说明了这种绷带的优势和未来的发展趋势。由此可推知，文章的重点是变色绷带。故选B。
