Bats can carry and transmit more than 60 viruses that can infect humans， Live Science noted. They include the world’ s deadliest viruses，such as Ebola and HIV. Due to their strong immune systems (免疫系统)，bats are able to host these viruses and not get sick. At the same time，the viruses keep developing inside the bats to create new variants (变体). These variants can then infect new hosts，such as other wild animals.

Pangolins (穿山甲)，for example，might be an intermediate host (中间宿主) for NCP，according to a recent study by Chinese scientists. This means that bats might have given the virus to pangolins，with pangolins then spreading it to humans.

Wild animals like snakes，hedgehogs (刺猬) and bamboo rats also carry various viruses. But since they live in the wild，there should be few chances for humans to come into contact with them and get infected—unless the animals are eaten or used to make animal products. When people hunt， buy and eat wild animals， they can introduce viruses to the rest of the population.

But this doesn’t mean that we should kill wild animals. Each species has a role in the eco-system (生态系统) and all of them are important in keeping a natural ecological balance. The lesson we can learn from disease outbreaks is to respect and protect animals and to live in harmony with them instead of hunting，killing，or eating them.

【1】Why can bats host many viruses without getting sick?

A.Because these viruses are not deadly.

B.Because the viruses are kept in balance.

C.Because they have strong immune systems.

D.Because they can spread the viruses to other animals.

【2】The underlined word“harmony”in the last paragraph probably means .

A.dangerB.peaceC.painD.surprise

【3】According to the story，what lesson should humans learn?

A.Research more about wild animals.B.Exercise regularly to stay healthy.

C.Stop keeping animals as pets.D.Don’t buy or eat wild animals.

spent final this even still cough mask crowded fight team

As the saying goes, “A hero is known in the time of misfortune(不幸)”. Zhong Nanshan is a hero like 【1】. He is a doctor in Guangdong, who saved many people’s lives in 2003.

In 2003, SARS broke out in Guangdong. Later, it spread across China and other parts of the world. Patients 【2】 a lot and got fevers. Hundreds of patients 【3】 died from the disease. Even many doctors and nurses got SARS when they treated patients. So everyone was afraid of it. But Zhong was brave enough 【4】 the disease. Zhong 【5】 days and nights finding the cause of the disease. And with his way of treating, many patients began to get better. Zhong 【6】 won people’s trust.

In early 2020, a disease called NCP hit Wuhan. It spread quickly. Around tens of thousands of Chinese people were infected(感染). Zhong, 84, led his 【7】 to Wuhan to fight the illness. Zhong’s team took many measures to cure the patients with NCP. He advised people to wear 【8】, wash hands frequently(频繁地), stay at home and not to go to 【9】 places.

Zhong likes sports very much. When he was 67, he could still play basketball. Now at the age of 84, Zhong 【10】 treats patients in the hospital and teaches young doctors. “I am just a doctor.” Zhong says. But we think he is a hero and a fighter.

【1】Kunyu Mountain is in ______.

A.Yan'anB.YantaiC.YinchuanD.Yingkou

【2】The second bus to Kunyu Mountain departs at ______ every day.

A.8:00 a.m.B.9:15 a.m.C.3:15 p.m.D.6:30 p.m.

【3】To take part in the festival, visitors should go to Kunyu Mountain in ______.

A.AprilB.JuneC.AugustD.October

【4】What can we learn from the passage?

A.Kunyu Mountain is famous for its modern beauty.

B.Visitors can enjoy flowers and fruit trees at the festival.

C.Kunyu Mountain is open to visitors for 24 hours a day.

D.The weather in summer is hot and dry on Kunyu Mountain.

【5】We can most probably find this passage ______.

A.on TVB.in a diaryC.in a magazineD.on the Internet

After people have been used to their new work situation. But what if your job was to control a multi-billion-dollar space rover (探测车) located on a planet nearly 200 million km away from Earth?

A team of NASA scientists is doing just that. In order to follow social distancing rules, these scientists have had to work from home. But they’ve still found ways to work together and take care of the complex (复杂的) tasks that are needed to keep the Curiosity rover working on Mars.

Their work-from-home setups (装配) as seen in photos provided to CNBC and ScienceAlert, look much like home office setups. They use ordinary computers. But instead of working on spreadsheets (电子制表), these scientists are programming complex sequences (序列) of instructions that are then sent to the rover. These instructions allowed the rover to find a rock sample (样本) in a location on Mars called “Edinburgh”.

Usually, the team’s 20 scientists work together by communicating through apps or video meetings. One scientist might have to follow 15 message channels (通道) at once.

NASA gave the scientists headsets (耳机) monitors and other equipment to allow them to do their jobs from home. However, the goggles (眼镜) they usually use to analyze (分析) pictures from Mars could not be sent out. So they have to depend on red-and-blue glass lenses (镜片) instead.

But difficulties like these have not been a problem for the scientists. In fact, getting used to changing situations is “classic, textbook NASA,” according to the head of science operations Carrie Bridge. “We’re presented with a problem and we find out how to make things work. Mars isn’t standing still for us; we’re still exploring,” she said.

【1】During the outbreak, NASA scientists ________.

A.use different computers to work

B.work on spreadsheets

C.are making Curiosity rover work from home

【2】Working at home is not convenient for NASA scientists because ________.

A.they have to use red-and-blue glass lenses

B.they cannot communicate person to person

C.they don’t have the equipment to do their jobs

【3】Which of the following is NOT TRUE according to the article?

A.Mars is nearly 200 million km away from Earth.

B.One scientist might have to contact with several other scientists at the same time.

C.NASA scientists can’t work together.

【4】How do we understand “classic, textbook NASA” in the last paragraph?

A.NASA wrote a textbook on how to deal with problems.

B.NASA always finds ways to deal with new situations.

C.Difficulties are uncommon for NASA.

【5】What is the story mainly about?

A.NASA’s project on Mars.

B.The problems NASA faces.

C.How NASA scientists work at home.

【1】What can we know about chihuahuas from the chart?

A.They don’t need their masters’ attention.

B.Their masters may also need their company.

C.They are more likely to be smart and creative.

【2】Which of the following is TRUE according to the information above?

A.German Shepherds are the top choice for energetic and outgoing people.

B.People with German Shepherds come out on top for being conscientious.

C.People with poodles enjoy the challenge of keeping up with their cats.

【3】Where may you read this chart?

A.In a novel.B.In a notice.C.In a magazine.

A. You’re welcome. B. Oh, no.

C. You’re right. D. Thank you.

—Sorry, I haven't. Why _____ you ask Mary?

A. not B. don't C. won't D. didn't

A. describes B. improves

C. prepares D. corrects

【1】People can do the following things according to the information above EXCEPT ________.

A.learn how to keep healthyB.learn how to gain weightC.learn how to lose weight

【2】From the ad. we know that ________.

A.people can call Dr. Kostow to get more information

B.people can email Dr. Kostow to get more information

C.it’s free all the time

A. travel B. will travel C. travels D. are going to travel