While the novel coronavirus is dangerous for ...

While the novel coronavirus is dangerous for everyone, it is particularly so for the first respond-ere who are being exposed to the illness daily. In the US alone, almost 5,500 nurses, doctors, and other healthcare professionals have been infected with COVID-19. Unfortunately, of these, dozens have succumbed to the disease. Now, hospital workers worldwide may get some relief thanks to Spot, a semi-autonomous four-legged robot developed by Waltham, Massachusetts-based robotics company, Boston Dynamics.

“Starting in early March, Boston Dynamics started receiving inquiries from hospitals asking if our robots could help minimize their staff ’s exposure to COVID-19,” the company writes in a blog post. In response, the company reconfigured (改装）the 3-foot tall robot to operate as a mobile telemedicine platform, enabling healthcare providers to determine a patient’s condition remotely.

The first four-legged robot“dog” was working in the Brigham and Women’s Hospital of Harvard University on April 9, 2020. Equipped with an iPad “face” and a two-way radio that allows for real-time conversation, Spot helps doctors to speak to patients without coming in contact with them.

“With current practice at local hospitals, patients suspected to have COVID-19 are asked to line up in tents outside to answer questions and get initial assessments for temperature. This process requires up to five medical staff, placing those individuals at high risk of being exposed to the virus,”Boston Dynamics explains.“With the use of a mobile robot, hospitals are able to reduce the number of necessary medical staff at the scene and conserve their limited PPE (personal protective equipment) supply.” The company says the doctors can even use Spot to talk to patients from the safety of their own homes.

Though Spot has already proved extremely helpful, the robotics manufacturer believes it can be even more so. The engineers are currently working on“teaching” the robot to perform tasks like temperature checks. The company is also developing new technology that will allow Spot to aid in the disinfection (消毒)of hospitals as well as other public areas.

1.What does the underlined phrase“succumbed to” probably mean in the first paragraph?

A.Suffered from. B.Recovered from.

C.Died from. D.Resulted from.

2.What will happen with the help of the robot?

A.No medical workers will be needed at the scene.

B.Medical workers will become much safer.

C.Suspected patients needn’t line up in tents.

D.Medical workers won’t be infected with viruses.

3.What can Spot do at present?

A.Communicating with the suspected patients.

B.Checking a person’s temperature in the clinic.

C.Assisting people in the disinfection of hospitals.

D.Showing people how to wear protective masks.

4.Which of the following is the best title of the passage?

A.Boston Dynamics Developed A Robot Dog

B.A Robot Was Developed to Assist Doctors

C.COVID -19 Virus Endangers Medical Workers

D.Robot Dog Joins The Fight Against COVID-19

高三英语阅读理解中等难度题查看答案及解析

While the human world is suffering from the novel coronavirus outbreak, our planet is actually showing certain signs of “recovery” from the damage caused by human activity. According to the BBC, new satellite images released by the European Space Agency showed that levels of air pollutants and greenhouse gases have “fallen sharply” in major cities in Europe and the United States ever since the lockdown started.

This is what happened after recent discoveries in Antarctica. An international team of 89 scientists found that the ice in Greenland and Antarctica is melting six times faster in the 2010s than it was in the 1990s. And in February, Argentina’s Marambio research station in Antarctica recorded a record high temperature of 20.75 ℃ on the continent.

So what exactly will happen if the temperature keeps rising and the ice keeps melting? A third study might give you an idea. A team of scientists drilled a hole into the seafloor in west Antarctica and extracted (提取) material from underground, in which they found traces of roots, spores and pollen—typical products of a rainforest—that dated back 90 million years ago. In other words, Antarctica was very likely a rainforest back when the dinosaurs walked on Earth. But given the fact that the South Pole has four months of darkness during winter—even millions of years ago—scientists believe that the rainforest could only exist if the greenhouse gas concentrations were extremely high back then to keep the continent warm when there was little or no sunlight.

“We didn’t know that this Cretaceous (白垩纪的) greenhouse climate was that extreme,” Johann Klages of the Alfred Wegener Institute in Germany and a co-author of the research told the Guardian. “It shows us what carbon dioxide is able to do.”

Ice or no ice, Antarctica will be—and has always been—fine with extreme changes. The human world, however, may not be.

Now, during the coronavirus lockdown, we’ve seen the changes resulting from less human activity. Hopefully, we’ll hold on to those changes—not for Antarctica or the planet, but for ourselves.

1.What does Paragraph 1 mainly tell us?

A.Our planet is returning to its original state due to the novel coronavirus outbreak.

B.The lockdown of major cities contributed to the decrease of greenhouse gases.

C.The novel coronavirus has a positive effect on the human beings.

D.The novel coronavirus outbreak resulted from human activity.

2.What do we learn from the third study?

A.Typical products of a rainforest were dug out in Antarctica.

B.Traces of dinosaurs living in rainforests were spotted in Antarctica.

C.There was a good possibility of high greenhouse gas concentrations in Antarctica.

D.There used to be enough sunlight for the rainforest in the Cretaceous Antarctica.

3.Which of the following statements is true according to the passage?

A.Human activity doesn’t threaten life in Antarctica.

B.The ice in Antarctica is melting faster in the 2010s than now.

C.We should reduce carbon dioxide emissions for our own sake.

D.The lockdown can be carried on to slow down global warming.

4.What is the main purpose of the passage?

A.To encourage us to defeat the novel coronavirus.

B.To explain the effects of greenhouse gases.

C.To draw our attention to ecosystem in Antarctica.

D.To call on us to reduce human impact on the environment.

高三英语阅读理解中等难度题查看答案及解析

______ for the efforts of medical staff, the spread of the novel coronavirus would not be controlled, which astonishes the whole world.

A.Were not it B.Were it not C.Had not it been D.If it were

高三英语单项填空中等难度题查看答案及解析

Nadia, a four-year-old female Malayan Tiger at the Bronx Zoo tested _______for the novel coronavirus infection. It's the first known case of human-to-animal transmission in America.

A.positive B.poisonous C.negative D.neutral

高三英语单项填空困难题查看答案及解析

A drop in tourism during the coronavirus crisis is making it more difficult for some organizations to protect 1. (threaten) wildlife in Africa. Wildlife 2. (official) fear poaching (偷猎) activity will rise because the collapse of the travel industry leaves less money for guarding animals.

African rhinos have long been 3. threat from poachers who kill them for their horns. The illegal trade is fueled by the belief, in some cultures, 4. the horns have medicinal value which has not been proven by science.

The number of black rhinos in Africa 5. (increase) slowly. But a report in March by the International Union for Conservation of Nature (IUCN) said it still considered the animals “critically endangered”. In part, it credits the comeback of the rhinos to effective law enforcement. 6., the enforcement measures are very

costly. The organization spends about $10,000 each year for every rhino to pay for the protection.

The IUCN expects to lose $3 to $ 4 million this year and the 7. (lose) severely limits the group’s ability 8. (protect) the rhinos. Wildlife activists across Africa are now waiting to see how poachers will react to the current situation, and whether more rare wildlife 9. (kill).

The IUCN said the population of black rhinos grew at a 10. (year) rate of 2.5 percent between 2012 and 2018. Now, there are more than 5,600 animals. That growth was predicted to continue over the next five years, the environmental group said.

高三英语语法填空中等难度题查看答案及解析

Many a student ____ wearing MP3 players while walking on the street．It's quite dangerous．

A．is used to               B．are used to

C．was used to                 D．were used to

高三英语单项填空简单题查看答案及解析

阅读下面材料，在空白处填写 1 个适当的单词或括号内单词的正确形式。

The novel coronavirus, now officially named Covid-19, is a new 1. (ill) and scientists are still studying the best ways to control it. Defeating Covid-19, 2., is not only the job of scientists and doctors. People have an important role to play in the battle. The best wayto help prevent the virus 3. (spread) is by protecting yourself and staying healthy.

Scientists are now sure that Covid-19 is passed between people through coughing and sneezing. The virus travels through the air and can be breathed in by people nearby. It may also land 4. surfaces such as tables and chairs. If these surfaces 5. (touch), the virus may be on your hands. Touching your eyes or mouth with 6. (wash) hands can let the virus enter your body.

7. (protect) yourself and others, wear a mask at all times when out in public.　 This stops healthy people from breathing in Covid-19 and 8. (reduce) the amount of the virus ill people send into the air. Most importantly, wash your hands carefully and frequently, especially 9. you are outside your home.

Covid-19 is undoubtedly a serious social challenge, but if we all contribute and behave 10. (responsible), it is one that we can overcome.

高三英语语法填空中等难度题查看答案及解析

While it may seem like everyone surfs the web these days, there is fine line between casually checking your social media pages and having a full blown Internet addiction. If you fear that you may lose interest in other aspects of your life because you prefer to be on the Internet, you may be on your way to an Internet addiction.1.

Admit you are at risk of an addiction.

More and more people in the world are becoming addicted to the Internet. You are not the only one with this problem; it is becoming more and more common and more and more well known.2..

Set aside limited time for computer use.

Make sure not to turn it on too many times a week. If you have a laptop, make sure to put it somewhere that you can remember but not somewhere that you see every day. Try keeping the lid closed when you are not using it; 3. If you have a desktop PC, try not to go near it or put something over it like a sheet.

Call people instead of sending instant messages or texts.

If you are free on weekends, call friends and ask them to go outside. This will distract you from the computer.4.

Use an alarm clock or timer.

Before using your computer, decide on a time limit such as 30 minutes. Set the clock or timer and make sure that you get off the computer when the time is up. Alternatively create a shutdown timer on your desktop. 5..

A. Make a small list of what you want to do within that time.

B. When the computer is not looking at you, you are less likely to use it.

C. This can be programmed to shutdown your computer after the set time

D. Luckily, there are ways to avoid living your life in front of the computer.

E. This will stop you from using the Internet so often or going on to another page.

F. If you have a problem on weekdays, phone your friends or ask for help in person.

G. Do not be embarrassed; find others with the same problem and help each other beat it.

高三英语七选五中等难度题查看答案及解析

It is estimated that the novel will be _____ of his best sellers, for his novels are quite popular among young people．

高三英语单项填空中等难度题查看答案及解析

---- The novel isn’t easy for Xiao Wang to read, is it?

---- ______．His foreign language is far better than expected.

A．No, it isn’t        B．I’m afraid not．  C．I think so．        D．Yes, it is.

高三英语单项填空中等难度题查看答案及解析