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题型:阅读理解-阅读单选 难度:0.65 引用次数:127 题号:17758069

More than 2,600 enterprises gathered and presented their advanced products at the China International Import Expo (CIIE). And many innovative products have made their world premiere. Let’s have a look at three of them.

Quick corona-virus test machine

Nucleic acid testing could be faster in the future. King Fisher Apex, made by the Finnish tech company Thermo Fisher Scientific,can complete the extraction of 96 nucleic acid samples in just 15 minutes. The tester can purify nucleic acid and protein automatically to save researchers’ time spent on additional steps, significantly improving nucleic acid test efficiency. Also, the system eliminates manual intervention. The risk of exposure to harmful re-agents or biological samples, such as blood,is greatly reduced for medical staff.

Myopic (近视) prevention glasses

Here comes a lifesaver for teenagers with poor eyesight — a myopic control lens. Whether it’s a classroom blackboard or a tablet,an outdoor activity or a mobile phone game, the Stellest lens from Essilor, a French company, keeps the same control effect, with changeable viewing angles and constant visual clarity. The lens can create a beam in front of the retina that will slow down the increase of the eye axis. Therefore, the development of myopia can be contained.

Portable kayak

A folding,portable,18-kilogram“backpack”can be inflated into a kayak. The safe, lightweight ITIWIT X500 Kayak,made by Decathlon,a French sports goods group, makes kayak racing accessible to the majority. It consists of five“air chambers”, so even if two of them don’t work, the inflatable kayak will help passengers safely return to land.To solve long-standing problems in the kayak industry — from lack of durability to overall insufficient performance — the company applied a special metal processing technology to its product. The ITIWITX500 Kayak’s V-shaped bottom makes this product long-lasting and tough.

1. Whose safety is largely guaranteed by King Fisher Apex?
A.The tester.B.Researchers.
C.Medical staff.D.The COVID-19 infected.
2. What do we know about the Stellest lens?
A.It is designed for people with poor eyesight.
B.It can be a cure for adolescent myopia.
C.Its control effect is mainly determined by viewing angles.
D.It may keep teenagers from developing high myopia.
3. Which part ensures the durability of the portable kayak?
A.Its air chambers.B.Its V-shaped bottom.
C.Its light weight.D.Its portable feature.

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阅读理解-阅读单选(约320词) | 适中 (0.65)
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【推荐1】Scientists at a Nevada earthquake lab tested new bridge designs last Wednesday. The designs have connectors they say are innovative (创新的).The designs were created to better stand violent earthquakes and speed reconstruction efforts after major quake damage.

The engineers in University of Nevada, Reno performed the experiments on a huge “shake table.” They attempted to simulate (模拟)the violent movements of an earthquake hitting a 100-ton, 70-fbot bridge model. They wanted to see how well it would hold up. Graduate students measured and marked signs of tiny cracks. But no major structural damage was observed in the initial review of the experiments. “The bridge has done better than we expected”, said Saiid Saiidi. He is a professor of civil and environmental engineering, also the project leader. He’s done related research for more than 30 years.

Bridges are already designed not to fall apart in earthquakes. But they are often unsafe for travel after big quakes. He said the tested designs used special types of connectors to link pre-made bridge parts. This included high-performance concrete. The parts have been tested on their own. But they were never tested before combined in a bridge model subjected to realistic earthquake movements, like the 1994 Northridge, California quake. Wednesday’s test inside the University of Nevad’s Earthquake Engineering Laboratory simulated the activities of a quake as large as magnitude 7. 5. The innovative connectors allow for ready-made concrete and other materials to be attached to an existing bridge foundation. This should speed repair and reconstruction.

The University of Nevada’s Earthquake Engineering Laboratory is the largest of its kind in the United States. The latest project is funded by the California Department of Transportation, which is currently developing plans for 10 pilot projects based on the developing bridge connector technology.

1. Why did the scientists work on the new bridge designs?
A.To observe quake damage.
B.To measure structural damage.
C.To simulate violent earthquakes.
D.To accelerate repair and rebuilding of bridges.
2. What is Professor Saiid Saiidi’s attitude towards the experiments?
A.Satisfied.B.Disappointed.C.Indifferent.D.Curious.
3. Which of the following can describe the experiments?
A.They were conducted in a small lab.
B.They caused huge cracks on the model.
C.They combined bridge parts with connectors.
D.They tested the bridges in genuine earthquakes.
4. What is the purpose of the text?
A.To solve a problem.B.To present a research result.
C.To give practical advice.D.To prevent damage from happening.
2020-10-13更新 | 123次组卷
阅读理解-阅读单选(约390词) | 适中 (0.65)
文章大意:本文为一篇说明文,长久以来对于空调的使用加快了全球气候变暖,针对该现象,非盈利组织RMI领导的一个团体发起了一场新型空调竞赛,该竞赛的目的旨在设计下一代空气冷却系统,能更好的保护环境。

【推荐2】The air conditioner is nearly 100 years old, but the technology is essentially the same as it used to be. Although it has made our lives easier and more comfortable, this all comes at a cost. The cooling of our air is responsible for 10% of the planet’s electricity consumption. And as the world heats, demand for air conditioners will continue to grow. This, in turn, will increase the influence that cooling machines have on the climate, thus warming the Earth further and creating a vicious cycle.

The current technology is unsustainable. That’s why a group led by RMI, a nonprofit environmental research organization, has launched the Global Cooling Prize, a $1-million competition to design of the next generation of air cooling systems. The proposed designs employ a wide range of technologies. Barocal, a Cambridge University startup, uses solid-state cooling technologies instead of traditional liquid refrigerants (制冷剂) that may leak out over time. Meanwhile, a proposal from Kraton, a Texan chemical engineering company, simply uses water, completely doing away with the main mechanical component of air conditioners, the compressor, to make the design more affordable. Others focus on the limitations of current air conditioning units, such as the lack of control over both temperature and humidity (湿度) at the same time. The design proposed by US startup M2 Thermal Solutions allows users to set both a specific temperature and the level of humidity in a room.

It’s difficult to tell what these proposed new machines will look like before the actual machines are built, but it’s arguable that they will create something new, as most of the shortlisted designs are based on fundamentally different technology compared to traditional devices.

The overall winner, announced in November 2021, will be awarded $1 million in prize money. This is when the real challenge begins: convincing the world that traditional air conditioners need replacing. “The current industry is worth more than $100 billion and has a well-established value chain from manufacturing (生产) to distribution to after-sales support,” said Vijay Mhetar, Kraton’s senior vice president. “Any new design will need to have minimum barriers for customer adoption and have a similar supply chain established.”

1. What does the underlined word “vicious” in Paragraph 1 probably mean?
A.Slow.B.Negative.
C.Natural.D.Efficient.
2. What will Kraton apply to its new design?
A.Water instead of a compressor.
B.Solid-state cooling technologies.
C.Recycled liquid refrigerants.
D.Control over humidity.
3. What does Vijay Mhetar expect of the new design?
A.It must be multifunctional.
B.It must be cheap and energy-saving.
C.It should have an entire service system.
D.It should offer more choices to customers.
4. What’s the author’s main purpose in writing the text?
A.To talk about the history of air conditioning.
B.To ask people to reduce air conditioning use.
C.To show the disadvantages of air conditioners.
D.To introduce a contest for new air conditioners.
2022-05-19更新 | 85次组卷
阅读理解-阅读单选(约300词) | 适中 (0.65)

【推荐3】It has been a year since 1 first saw UBTech's Walker robot at CES 2019. I was blown away by its ability to perform many tasks.

A year later, it had come a long way, gaining much better motor skills and the ability to maintain balance. During a CES 2020 demo(演示), UBTech showed how far Walker had come.The robot walked over to a table, picked up a bottle opener and used it to remove the cap from a bottle of soda. It picked up the bottle and a glass and poured the liquid in, without spilling.During the demo, Walker also performed a number of serious Yoga( 瑜伽) poses, including standing on one foot and leaning back.

UBTech said that the ability to pour drinks required visual servo( 伺服系统) technology using its cameras to judge the position of objects. The same methods allowed Walker to uncap a marker and draw a picture of a flower on a piece of paper at another point in the demo.

All of the betterment was made via software as UBTech hasn't made any physical adjustments too the robot since we saw it last year. On the inside, the robot uses a combination of a few different operating systems on these internal PCs, including Ubuntu, ROS and Android. Its battery promises up to 2 hours battery life after a 2-hour charge time,

UBTech continues development on this pioneering robot, but doesn't have public launch date. The company is targeting Walker toward the home, with an emphasis on helping seniors or. just doing house cleaning. To make it stable enough to adapt to all these different conditions is a huge challenge. However, if development of Walker continues, this robot could eventually be a game-changer.

1. How did the author feel when first seeing the robot?
A.Amazed.B.Proud.
C.Awkward.D.Disappointed.
2. What is Paragraph 2 mainly about?
A.The demos of CES 2019.B.The improvements of the robot.
C.The robot's motor ability.D.The robot's ability to remain steady.
3. What enables the robot to draw pictures?
A.The cap of the marker.B.The ability to pour drinks.
C.The using of more cameras.D.The system of position judging.
4. What can we infer from the last paragraph?
A.The robot is stable enough to help the old.
B.The robot has been available to the public.
C.Our life could be greatly influenced by the robot.
D.The basic concept of robot making will be changed.
2020-06-21更新 | 80次组卷
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