1 . If businesses are to get workers back into the office, finding ways to keep social distancing will be important. An Israeli company thinks it can help, using smart sensors installed on workplace ceilings.

PointGrab developed its technology before COVID-19 to help workspace managers optimize(优化) how employees use office space. About the size of a smoke alarm, the sensors can record the exact number and location of people in buildings including offices, hotels and restaurants. One of the company's first clients was Deloitte, which installed the system at its London office last year. PointGrab's sensors were connected to screens in the building to show the availability (利用率) of desks and shared areas in real time. PointGrab CEO Doron Shachar says it was one of a series of innovations(创新) that helped Deloitte fit 30% more people into 3% less space.

Now to prevent the coronavirus spreading face to face, PointGrab has modified the technology to some degree so the sensors can also monitor social distancing by keeping track of how far apart people are, and whether they're traveling in one direction around a building. Workspace managers can set up alarm for when two people are closer than two meters for more than 30 seconds, for example. The sensors have been included in the “six feet office” concept created by a company Cushman & Wakefield to encourage employees to practice social distancing. They are currently being used in this way at a university in the Netherlands, and at an innovation centre in Belgium. While the social distancing innovation is new, PointGrab has installed more than 10, 000 sensors for workspace optimization, including in the offices of Coca-Cola, Facebook and Dell.

Workers might not like the idea of being monitored, but PointGrab says no images or identifying features are recorded. Instead, each employee is represented as a dot on a screen. “The sensor does not violate people's privacy.” Shachar says. This is extremely important in the workspace.

1. What were the sensors used to do before COVID-19?

A．To identify employees.	B．To record locations.
C．To keep track of employees.	D．To make better use of office space.

2. What does the underlined word “modified” probably mean in Paragraph 3?

A．Introduced.

B．Adjusted.

C．Formed.

D．Boomed.

3. Which of the following is the best title for the text?

A．How we can get workers back into their office	B．How we can improve the employees’ efficiency
C．Smart sensors make office social distancing easier	D．Smart sensors are a key technological innovation

2 . 阅读下面对话，按照句子结构的语法和上下文的连贯性要求，在空格处填入一个适当的词语或使用括号中的词语的正确形式填空。

China announced on Monday it will provide $2 billion over two years to help to battle COVID-19,    1    has affected over 7 billion people and taken over 300,000 lives    2    （globe）and with economic and social development in affected countries, especially developing countries.

Given that some African countries have weak public health systems,    3    （supply）more material, technological and personnel support    4    them must be the top priority in COVID-19 response.

Since the outbreak, China    5    （send）a tremendous quantity of medical supplies and    6    （assist）as well as five Chinese    7    （medicine）expert teams to over 50 African countries. Besides, China is ready to work with the international community to help    8    hardest-hit countries under the greatest pressure from debt.

With the virus still raging, the most urgent task is    9    （make）all-out efforts in COVID-19 control and treatment. We must always put the people first,    10    nothing in the world is more precious than people's lives.

4 . A doctor named Chepurnov from Siberia conducted a controversial coronavirus immunity test after surviving COVID-19 in March. The 68-year-old Russian doctor spent time with coronavirus-positive patients without wearing a mask to see if he could get a second COVID-19 infection. The doctor was infected a second time and experienced a worse COVID-19 case than he had previously.

This unusual coronavirus immunity test can easily be filed under the “only in Russia” section of COVID-19 news. Only in Russia was a coronavirus vaccine approved for mass use before any scientific research was shared with the world and before the drug cleared the Phase 3 trial. The story gets even crazier, considering the doctor’s age. At 68-years-old, Alexander Chepurnov happens to be the kind of COVID-19 patient most at risk of developing a severe case.

Even so, Chepurnov’s controversial experiment isn’t without worth. It’s certainly the kind of experiment that others wouldn’t necessarily approve of, especially in western countries. But it’s the kind of experiment that can yield results — and Chepurnov did get his wish. He was reinfected with COVID- 19 within six months from the first bout. Chepurnov and his research team started to monitor his antibodies. He discovered that they vanished after three months. “The observation showed a fairly rapid decrease,” he told the paper. “By the end of the third month from the start of the disease, they ceased to be determined.” This falls in line with other studies about COVID-19 antibody life.

Chepurnov’s story also seems to fall in line with other studies that say immunity can last for at least 5-7 months. The story also proves that immunity lasts even after the antibodies are gone and suggests that other immune system components are indeed involved in providing prolonged protection. Others theorized that T cells would extend immunity beyond the life of the first batch of antibodies. Chepurnov’s empirical findings are also important for vaccine research. If immunity lasts less than a year, more booster shots (加强针剂) might be needed after the initial doses.

But Newsweek points out a problem with the experiment. Because his first case of COVID-19 hasn’t been diagnosed via a PCR test. Also, Chepurnov’s experiment hasn’t been published in a scientific journal, and it’s unclear what scientific rigors were applied. Still, if his findings are accurate, Chepurnov is actually right to warn against using a herd immunity approach to beat the pandemic.

1. Why is Chepurnovs experiment considered controversial?

A．Its not effective.	B．Its too dangerous.
C．Its disapproved of by Russia.	D．Its not diagnosed via a PCR test.

2. What does the underlined word "they" in Paragraph 3 probably refer to?

A．diseases

B．viruses

C．antibodies

D．results

3. What is the finding of Chepurnovs experiment?

A．COVID-19 immunity lasts permanently in ones body.

B．The longevity of COVID-19 antibodies is about 3 months.

C．Old patients are most at risk of developing a severe COVID-19.

D．Vaccination can protect one from being infected with coronaviruses.

4. Whats the main idea of the passage?

A．Siberia is a unique place for treating COVID-19 patients.

B．Newsweek found the evidence against herd immunity to COVID-19.

C．Researches showed humans produce antibodies if infected with coronaviruses.

D．A controversial experiment on coronavirus immunity was conducted in Russia.

5 . 假定你是李华，为全面迎接开学你市将邀请钟南山院士参加有关“抗疫”知识的在线讲座。请写信通知目前在某酒店隔离的你校英国留学生Johnny参加，内容包括：
1.写信目的；2.主讲人简介；3.时间和方式：下周三上午9点到11点，钉钉（Ding Talk）在线。
参考词汇：COVID-19新型冠状病毒；anti-epidemic防疫
注意：1.词数100左右；2.开头和结尾已为你写好。
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

6 . Cooking has become a hobby and major recreation (娱乐) for many people in quarantine during the COVID-19 pandemic. It’s almost impossible nowadays to check social media without at least two or three photos of delicious meals popping up on our screens. But behind the fancy recipes and boastful (炫耀的) social media posts, many of us don’t realize how much we take food for granted.

“At the same time while dealing with a COVID-19 pandemic, we are also on the brink of a hunger pandemic,” David Beasley, executive director of the World Food Program (WFP), a United Nations agency, warned on April 20.

Around 135 million people had been facing food shortages before the coronavirus outbreak, but now 130 million more could go hungry in 2020, said Arif Husain, chief economist at the World Food Program. Altogether, 265 million people are being pushed to the brink of starvation (饥饿) by the COVID-19 crisis.

According to The New York Times, thousands of workers in India are lining up twice a day for bread and fried vegetables to fight against hunger. And across Colombia, poor families are hanging red clothing and flags from their windows to show that they are hungry.

“We don’t have any money, and now we need to survive,” said Pauline Karushi, who lost her job at a jewelry store in Nairobi. “That means not eating much.”

Lockdowns and social distancing measures contributed to loss of income for people worldwide and disrupted (打乱) agricultural production and supply routes (路线), leaving millions to worry how they will get enough to eat.

Money alone will not be enough, according to WFP. Also crucial is ensuring (保证) that transport and supply chains stay open in the face of lockdowns.

“There is no shortage of food globally – yet. But problems in planting, harvesting and transporting food will leave less developed countries facing even more difficult times in the coming months, especially those reliant (依赖的) on imports,” Johan Swinnen, director general of the International Food Policy Research Institute in Washington told The New York Times.

However, for us, there’s no need for stockpiling (囤积) food, said Wei Baigang, an official from the Ministry of Agriculture and Rural Affairs. The reserves (储存) of rice and wheat in China are enough for the whole population for one year, according to Xinhua, and the prices remain stable.

“We have the confidence and determination to keep our rice bowls full,” said Pan Wenbo, another official from the ministry.

Past food shortages

Numbers of people in food crises in previous years (in millions)

2019             135M people in               55 countries

2018             113M people in          53 countries

2017             124M people in               51 countries

2016            108M people in               48 countries

1. What does the underlined phrase “on the brink of” in Paragraph 2 probably mean?

A．in case of

B．in prevention of

C．on the edge of

D．on the way to

2. What is the main idea of Paragraphs 3-5?

A．Causes of food crises in different countries.

B．The seriousness of the world’s hunger problem.

C．The negative effects of the coronavirus outbreak.

D．Ways to fight against food shortages in different countries.

3. What did Johan Swinnen tell us?

A．Money is the key to food supply chains.

B．The food shortage is a global problem.

C．Self-reliant countries don’t have food shortages.

D．Lockdowns will cause food crises in many countries.

4. What did the Chinese government advise people to do?

A．Stockpile enough food for emergencies.

B．Prepare themselves for high food prices.

C．Stay calm and confident in relation to food supplies.

D．Overcome any difficulties to transport food.

7 . 语法填空

The novel coronavirus, which    1    (origin)in the Chinese city of Wuhan and has now spread to 12 countries, has much in common     2     seasonal flu. They are both viral infections, share similar symptoms and crucially can spread from human to human. In the midst of flu season in much of the northern hemisphere,    3     (tell) the difference between the two will be vital in stopping its spread.

Human coronaviruses, of     4    there are four, can cause infections similar to flu: while many symptoms are mild, both can lead     5     pneumonia （肺炎）and become lethal（致命的）. However, the novel coronavirus（新型冠状病毒） is     6    (serious) than a "typical influenza infection," says Ian Jones, a professor of virology at the University of Reading.

While the mortality rates and symptoms of flu and novel coronavirus may end up being similar, humans'     7    (able) to fight off the viruses differ greatly.

Flu can spread from person to person from up to six feet away,     8    (large) caused by liquid emitted when the inflicted cough or sneeze. Those infected are usually contagious for around three days following the beginning of     9     illness, although this time-frame could stretch to over a week.

All this and more remains a mystery as for the new coronavirus. To understand the virility of the outbreak, Jones urges a focus     10    whether or not international cases lead to secondary infections. "If they don't," he explains, "it would suggest that the virus doesn't transmit quite so well: clearly all the people on the airplane (that traveled from an infected zone) didn't get it."

8 . 阅读下列材料，在空白处填入1个适当的单词或用括号内单词的正确形式。

As the saying goes, “A hero       1    (know) in the time of misfortune”. Zhong Nanshan is a hero like this. He is a doctor in Guangdong,     2     saved many people's lives in 2003.

In 2003, SARS    3    (break)out in Guangdong. Later, it spread across China and other parts of the world. Patients coughed a lot and got fevers.    4    (hundred)of patient seven died from the disease. Even many doctors and nurses got SARS when they treated patients. So, everyone was afraid of it. Zhong spent days and nights to find     5    cause of the disease. Thanks    6    his way of treating, many patients began to get better. Zhong finally won people's trust.

In early 2020,a disease     7    (call)COVID-19 hit Wuhan. It spread around quickly and tens of thousands of people were infected. Zhong, 84, led    8    (he) team to fight the illness. Zhong's team took many measures     9    (cure)the patients with COVID-19. He   advised people to wear masks, wash hands     10    (frequent),stay at home and not to go to crowd places.

Now at the age of 84, Zhong still treats patients in the hospital and teaches young doctors.

9 . 阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形株式。

An elderly woman has broken down in tears inside a Coles supermarket after arriving in the canned food aisle to empty    1    (shelf),with all products taken by ＂selfish"panic buyers.

A heartbreaking image of the woman,    2    (take)inside the Port Melbourne supermarket at midday on Thursday and shared to Twitter by Nine News reporter Seb Costello,started an outpouring of feelings from the public,with many     3    (express) their willingness to help the lady and others currently suffering.

“    4    (honest),that is the picture     5    catches this madness,"one person responded.

＂This really breaks my heart,the elderly have already given to society,why aren't we looking after them?”another said.

＂This absolutely breaks my heart.If I    6    (know)where this lady lives,I'd help her out with food in a heartbeat.This has to stop now,"    7    third wrote.

One lady claimed she"sobbed     8    10 minutes"after seeing the image,and hoped"someone helped her fill her basker"and made sure she was.OK at home. Others shared similarly shocking events they had seen during the COVID-19(新冠病毒）chaos.

I     9    (tell)that the 92 year-old mum of a friend had a tin of tomato soup snatched from her hand at a supermarket in Ryde earlier this week.Disgraceful    10    （behave)."one wrote.