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题型:阅读理解-阅读单选 难度:0.65 引用次数:246 题号:9253783

Mosquitos can infect you with Malaria, yellow fever, and dengue. All can kill you. So we spray large areas with pesticides (杀虫剂) .But this negatively affects the whole ecosystem and your health. Now there’s a new device, which claims to keep you and your loved one’s mosquito free.


The device was designed by two German engineers who were fed up with being bitten while camping. They found solutions containing ‘DEET’ — a damaging chemical which could be both harmful to us and the environment — worked best, but still only for 45 minutes maximum and that the traditional anti-pest devices didn’t work well! So, they designed the brand new type of bug killer, Moskinator.

Instead of trying to keep the mosquitos away, it actually attracts them, then catches and kills them! It lures (引诱) the flies and mosquitos near using a safe, completely harmless LED light. The flying pests (害虫) can’t resist the UV-PT light! Next to the LED light is a powerful, yet efficient reverse fan that sucks (吸) the insects through a one-way trapdoor. Once trapped in the drying basket they are dried to death by the fan a matter of 2 minutes. You can simply empty the dead bugs into the trash, without even touching them.

Does Moskinator really work in real life? We had some of our customers try it out in their homes. The results speak for themselves:

“My wife would complain she had a headache in the mornings whenever we used chemical pesticides. Now we use our Moskinator, and we wake up bite and headache free!”— Shane Maguire

“This Moskinator really works and you don’t have to worry about breathing any harmful chemicals.”— Jake Shearer

1. What is the name of the new device?
A.DEET.B.Moskinator C.Malaria.D.UV-PT.
2. What is the function of the LED light?
A.It gives off natural light.B.It attracts flying pests.
C.It sucks pests inside.D.It dries pests to death.
3. Which of the following best describes the new device?
A.Innovative and effective.B.Traditional and cheap.
C.Power-saving and portable.D.Chemical free and soundless.
4. What is the purpose of writing the text?
A.To educate the readers.B.To entertain the readers.
C.To introduce a new device.D.To evaluate a new device.

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阅读理解-阅读单选(约290词) | 适中 (0.65)
文章大意:本文为一篇新闻报道。文章介绍了中国国家广播电视总台周一发布的2021年全国四大科技新闻。

【推荐1】China Media Group, the country’s state broadcaster, released the country’s top 4 science and technology news stories in 2021 on Monday.

1. China’s “artificial sun” sets new world record

China’s “artificial sun” nuclear fusion reactor in Hefei, capital of east China’s Anhui Province, has set a new world record after running at the temperature of 120 million degrees Celsius for 101 seconds in May, laying the foundation for the country to build its own nuclear fusion energy station in the future. Click here to read more.

2. China’s first self-operated deep-water gas exploration platform starts production

China’s first self-operated 1.5-kilometer deep-water gas exploration platform, “Deep Sea No. 1,” started production on June 25. Located in south China’s Hainan Province, it is expected to supply 3 billion m3 of deep-sea natural gas each year to Guangdong, Hainan and Hong Kong. Click here to read more.

3. China Space Station now able to host long stay for astronauts

China’s unfinished space station has welcomed two groups of astronauts for months-long stay. The Shenzhou-12 crew, including three astronauts, entered the space station’s core module Tianhe in mid-June and lived there for three months till mid-September. The Shenzhou-13 crew, including a female astronaut and her two male coworkers, arrived at Tianhe in mid-October and will stay there for six months. Click here to read more.

4. China’s unmanned submersible explores deepest sea on Earth

China’s self-developed unmanned submersible “Haidou-1” has realized full detection exploration in Mariana Trench-the deepest point known on Earth-for the first time with a max diving depth of 10, 908 meters and a non-stop working time of over eight hours. Click here to read more.

1. Which two pieces of news are related to energy?
A.1 and 2.B.2 and 3.C.3 and 4.D.4 and 1.
2. In which year did “Haidou-1” dive to the depth of 10, 908 meters for the first time?
A.In 2019.B.In 2020.C.In 2021. D.In 2022.
3. Where can this text be found?
A.On a web page.B.In a storybook.
C.In a newspaper.D.In a sci-fi movie
2023-02-15更新 | 57次组卷
阅读理解-阅读单选(约360词) | 适中 (0.65)
名校
文章大意:本文是一篇说明文。文章介绍了一款挂在脖子上的可穿戴冷却设备——Coolify的机制和效用。

【推荐2】For the past few years, several companies have been trying to create the perfect portable air conditioner, and it’s a task that’s taken on new urgency as extreme heat waves spread across the world. They’ve tried self-cooling undershirts, wrist-worn cooling plates, and windowless cooling machines. But so far, none seem quite as practical as the Coolify, a $150 wearable that hangs around your neck.

Torras, the company behind Coolify, says its version is different from those cheap neck fans, even if it looks similar on the surface. That’s largely because of its ceramic (陶瓷的) cooling plate that sits right behind your neck. By running the plate, the device creates a cooling sense. “Basically, a neck fan can sometimes just blow hot air around,” Torras spokesman Jackson Wightman says. “This is genuinely an air conditioner as a result of the cooling plate.”

The Coolify comes in smooth plastic and has circular speaker grilles (格栅) on either side of its horseshoe design, somewhat resembling a pair of headphones. Look through either grille, and you’ll see a fan that draws in air and pushes it out through the long pair of passages above.

The device runs on a built-in battery that charges via USB-C. Torras says the battery lasts between two hours and eight hours on a charge, depending on which of its three fan speeds (H/M/L) you select.

One downside to the Coolify and to neck fans in general is that they’re ugly looking wearing this device. Then again, pretty much everyone wanted to try it for themselves, and they were all pleasantly surprised by its cooling effects.

Spending $150 on this might seem expensive. But the real appeal of a device like Coolify — and of wearable air conditioners in general — is that they can spare you from having to turn on the A/C just when one person is feeling hot. The Coolifty fulfills that goal, so we could pay for it in the long run.

1. Why did many companies try to make the portable air conditioner?
A.Because it can help them make profits.
B.Because science and technology is developing.
C.Because the globe is becoming hotter and hotter.
D.Because traditional air conditioners are out of date.
2. What makes Coolify different from a neck fan?
A.It uses smooth plastic.B.It has circular speaker grilles.
C.It adopts a horseshoe design.D.It adopts ceramic cooling plate.
3. How can you make Coolify run as long time as possible?
A.By charging it for 8 hours.B.By choosing a built-in battery.
C.By choosing the low fan speed.D.By using USB-C to offer power for it.
4. What is the main idea of the last paragraph?
A.The Coolify is expensive.B.The Coolify is worth buying.
C.The Coolify is better than the A/C.D.The Coolify is the best air conditioner.
2022-01-24更新 | 34次组卷
阅读理解-阅读单选(约400词) | 适中 (0.65)

【推荐3】A team led by Dr. Edward Chang at the University of California carried out an experiment, in which they used brain waves of a paralyzed(瘫痪的) man who cannot speak to produce words from his thoughts onto a computer.

“Most of us take for granted how easily we communicate through speech,” Chang said. “It’s exciting to think we’re at the very beginning of a new chapter, a new field to reduce the difficulties of patients who lost that ability.” He admitted that such a communication method for paralysis victims would require years of additional research. But the new study marks an important step forward.

Using brain signals to work around disabilities is currently a hot field of study. In recent years, experiments with mind-controlled prosthetics(假肢) have permitted paralyzed individuals to shake hands with someone or take a drink using a robotic arm. The process involves people imagining movements and those brain signals are sent through a computer to the prosthetic.

Chang’s team built their experiment on earlier work. They developed a method called “speech neuroprosthetic”. The process uses brain waves that normally control the voice system.

The person who volunteered to test the device was a man. He suffered a brain-stem stroke 15 years ago, which caused widespread paralysis and left him unable to speak.

The researchers implanted electrodes on the surface of the man’s brain, over the area that controls speech. A computer observed the patterns when he attempted to say common words such as “water” or “good”. Over time, the computer became able to differentiate(区分) between 50 words that could form more than 1, 000 sentences.

Repeatedly given questions such as “How are you today?” or “Are you thirsty?”, the device enabled the man to answer “I am very good.” or “No, I am not thirsty.” The words were not voiced, but were turned into text on the computer.

It takes about three to four seconds for a word to appear after the man tries to say it. The researchers say their next steps will include seeking ways to improve the device’s speed, correctness and vocabulary size. They also plan to one day develop a computer-produced voice that could replace text on a computer.

1. What does Chang want to tell us in paragraph 2?
A.The team’s experiment is of great value.
B.We should improve our ability of speaking.
C.Their communication method is fully developed now.
D.The method has solved most problems of the patients.
2. What’s the similarity between mind-controlled prosthetics and the method of Chang’s team?
A.They both use brain signals.B.They both are very popular now.
C.They both change words into action.D.They both produce words on a screen.
3. How will Chang’s team improve their device in the future?
A.By making it smaller.
B.By making it affordable.
C.By making it produce pictures on a computer.
D.By making it differentiate more words.
4. What is the best title for the text?
A.Paralyzed Man Uses Mind-controlled Prosthetics to Finish Tasks
B.Paralyzed Man Communicates Normally with a Speech-aided Device
C.Device Uses Brain Waves of Paralyzed Man to Help Him Communicate
D.Repeated Questions Given to Paralyzed Man Make Device More Intelligent
2021-10-31更新 | 83次组卷
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