Some important dates in China’s fighting Covid-19 before May 7,2020 | |
| Jan 20, 2020~ Feb 20,2020 | Jan 23: Wuhan declared temporary outbound (向外的) traffic restrictions. Jan 24: National medical teams began to be sent to Hubei and wuhan. Jan 27: The Central Steering (指导) Group arrived in Wuhan. Feb 18: The daily number of newly cured and discharged (出院) patients exceeded that of the newly confirmed cases. |
| Feb 21, 2020~ Mar 17,2020 | Feb 21: Most provinces and equivalent administrative units started to lower their public health emergency response level. Feb 24: The WHO-China Joint Mission on Covid-19 held a press conference in Beijing. Mar 11-17: The epidemic (流行病) peak had passed in China as a whole. |
| Mar 18,2020 ~Apr 28,2020 | Apr1: Chinese customs began NAT (核酸检测) on inbound arrivals at all points of entry. Apr 8: Wuhan lifted outbound traffic restrictions. Apr 26: The last Covid-19 patient in Wuhan was discharged from hospital. |
| Apr 29, 2020~ May 7,2020 | Apr 30: The public health emergency response was lowered to Level 2 in the Beijing-Tianjin-Hebei region. May 7: The State Council released Guidelines on Conducting Covid-19 Prevention and Control on an Ongoing Basis. |
1. What happened between January 20 and February 20?
| A．The Central Steering Group arrived in Wuhan. |
| B．The WHO-China Joint Mission on Covid-19 held a press conference. |
| C．The last Covid-19 patient in Wuhan was discharged from hospital. |
| D．Beijing lowered its emergency response level. |
| A．January 23. | B．March 11. | C．April 8. | D．May 7. |
Traditional Chinese medicine (TCM) is a health care system in which patients
According to the World Health Organization, nearly 80 percent of the world's population depends for its primary health care needs
Increasingly, however, modern medicines also contain substances from animals and plants. Given growing populations, increasing wealth, and the spreading
3 . Researchers say a new electrical device placed in three paralyzed patients has helped them walk again. The lower bodies of the three patients were left paralyzed after they suffered spinal (脊柱的) cord injuries. But a device implanted in the spinal cord was able to send electrical signals to the muscles to permit them to stand, walk and exercise.
Scientists have discovered that neurons—which receive and send signals for muscle movements—often still work in injured patients with serious spinal cord injuries. However, past research into spinal cord injuries has centered on the stimulation of neurons. Now in the latest experiment led by Gregoire Courtine and Jocelyne Bloch of the Swiss Federal Institute of Technology in Lausanne, three paralyzed men were implanted a new electrical device designed to copy an action of the brain, in which it sends signals to the spinal cord that result in muscle movement. When the spinal cord receives the brain signals, it stimulates a collection of nerve cells that can activate different muscles.
The researchers reported that all three patients who got the spinal cord implants were able to take their first steps within an hour after receiving them. Over the next six months, the patients regained the ability to take part in more advanced walking activities, the study found. They were also able to ride bicycles and swim in community settings.
Unlike other attempts to help paralyzed patients walk by stimulating nerves through the back of the spine, Courtine said that his team redesigned the devices so signals would enter the spine from the sides. This method permits more direct targeting and activation of spinal cord areas, he said.
The team then developed artificial intelligence (AI) systems linked to the device. The AI controls electrodes on the device to send signals to stimulate individual nerves that control muscles needed for walking and other activities. However, because the patients’ muscles were weak from not being used, they needed help with supporting their weight, the researchers said. It also took some time for them to learn to work with the technology. Still, Bloch said, “The more they train, the more they start lifting their muscles, the more fluid it becomes.”
1. What can be inferred from paragraph 2?| A．Courtine and Bloch have found that neurons in paralyzed patients still work. |
| B．The new electrical device can imitate the brain to send signals to the spinal cord. |
| C．Three paralyzed men recovered with the help of a new electrical device. |
| D．Stimulating the neurons is the focus of the latest research into spinal .cord injuries. |
| A．By stimulating nerves through the back of the spine. |
| B．By using the AI system. |
| C．By making signals enter the spine from the sides. |
| D．By sending the signals to the brain. |
| A．Every garden has its weeds. |
| B．Put the cart (运货马车) before the horse. |
| C．It's hard to please all. |
| D．Practice makes perfect. |
| A．To report the consequence of spinal cord injuries. |
| B．To introduce the findings of a recent research. |
| C．To compare a recent research with other previous researches. |
| D．To recommend a treatment for paralyzed patients. |
4 . Metin Sitti at the Max Planck Institute for Intelligent Systems in Stuttgart, Germany, and his colleagues have developed tiny robots called “microrollers” that can carry cancer drugs and selectively target human breast cancer cells. The team drew inspiration for the design of the robots from white blood cells in the human body, which can move along the walls of blood vessels (血管) against the direction of blood flow.
The microrollers are round and made from glass microparticles. One half of the robot was coated with a thin magnetic nanofilm (磁性纳米膜) made from nickel and gold. The other half was coated with the cancer drug doxorubicin as well as molecules that recognize cancer cells.
The team tested the robots using mouse blood and artificial channels lined with human endothelial cells—the kind of cells that line the inner walls of our blood vessels. The robots were exposed to a mixture of cancerous and healthy tissue. The microrollers selectively attached to the cancer cells and were activated using UV light to release the doxorubicin.
By applying magnetic fields, the team was able to control the movement of the microrollers, both with and against the flow of blood. The microrollers can reach a speed of up to 600 micrometers per second. “If you come to a spot where you need to take the right path and if you miss it, then you could go back and go to the right one,” says Setti.
In future, the researchers want to use other methods to start the drug release, such as heat or near-infrared light. They also plan to try making microrollers out of materials that would break down in the body over a few weeks or months.
The team hopes to test the microrollers in animals soon. “The rollers need to carry enough cancer drugs, which is why we need to have them in large numbers,” says Setti. “But since we can locally take drugs to the right target, we don’t need huge dosages (剂量).”
1. What can the microrollers be used for?| A．Repairing blood cells. | B．Delivering drugs. | C．Improving blood flow. | D．Performing operations. |
| A．Their shape. | B．Their advantage. | C．Their design. | D．Their application. |
| A．Their direction can be adjusted. | B．They might miss the target cells. |
| C．They might get stuck in the blood. | D．Their speed can change automatically. |
| A．Put the microrollers to clinical use. | B．Sell the microrollers in large quantities. |
| C．Tear the microrollers down in the body. | D．Experiment with the microrollers further. |
5 . Wu Ming, a young German born after 1995, is a big fan of Chinese culture. As he thought some diseases can’t be treated
Studying TCM also
Wu
Wu thinks there’s no big difference between China and Western countries. “
| A．immediately | B．gradually | C．thoroughly | D．consistently |
| A．depend on | B．dig into | C．look up | D．work out |
| A．created | B．enjoyed | C．advanced | D．acknowledged |
| A．overcame | B．seized | C．divided | D．shifted |
| A．raised | B．sorted | C．cooked | D．tasted |
| A．aspects | B．standards | C．themes | D．means |
| A．enriched | B．secured | C．expanded | D．changed |
| A．exposed | B．reduced | C．restricted | D．addicted |
| A．businesses | B．recreations | C．routines | D．tasks |
| A．balanced | B．wealthy | C．humble | D．efficient |
| A．employs | B．promotes | C．outlines | D．conveys |
| A．scanning | B．checking | C．exploring | D．comparing |
| A．concern | B．wish | C．demand | D．passion |
| A．Misunderstanding | B．Destruction | C．Stress | D．Failure |
| A．source | B．basis | C．bridge | D．tool |
When it comes to national parks, people often link them with those famous landmarks
Recently, however, national parks in Canada appear on the prescriptions (处方) given by Canadian doctors.
According to CBC, a medical program named “PaRx”
Many
“We’re hoping that our PaRx program not only
7 . Sam is a fourth-year student at Harvard Medical School, but poetry is still a big part of his life, now with a new teacher, Rafael Campo, who believes poetry can benefit every doctor's education and work. Rafael is a physician, professor and a highly respected poet.
“Poetry is in every encounter with my patients. I think healing is really in a very great way about poetry. And if we do anything when we're with our patients, we're really immersing ourselves in their stories, really hearing their voices. And, certainly, that's what a poem does,” he said.
Rafael worries that something important has been lost in medicine and medical education today: humanity, which he finds in poetry. To end that, he leads a weekly reading and writing workshop for medical students and residents.
He thinks medical training focuses too much on distancing the doctor from his or her patients, and poems can help close that gap.
Third-year resident Andrea Schwartz was one of the workshop regulars. She said, “I think there's no other profession other than medicine that produces as many poets as it does. And I think that is because there's just so much power in doctors and patients interacting when patients are at their saddest.” Not everyone believes that's what doctors should do, though.
Rafael said, “I was afraid of how people might judge me, actually. In the medical profession, as many people know, we must always put the emergency first. But, you know, that kind of treatment, if it's happening in the hospital, very regrettably, sadly, results in a bad outcome. The family is sitting by the bedside. The patient hasn't survived the cancer. Don't we still have a role as healers there?”
In a poem titled “Health”, Rafael writes of the wish to live forever in a world made painless by our incurable joy. He says he will continue teaching students, helping patients and writing poems, his own brand of medicine.
1. Which of the following is true about Rafael Campo?| A．He is a doctor. | B．He benefits from education. |
| C．He is a professional poet. | D．He isn’t keen on poetry. |
| A．Medical training is significant. | B．Poetry has no effects on medical treatment. |
| C．Poetry is similar to medical work in a sense. | D．Patients are closely linked to doctors. |
| A．It relieves patients' family members. | B．It contributes to medical work a lot. |
| C．It has nothing to do with patients. | D．It prevents doctors understanding patients. |
| A．Assist the students in medical schools. | B．Teach those patients in the hospital. |
| C．Write poems for his medical students. | D．Stick to his unique way in the medical field. |
8 . When a large facial tumor (肿瘤) was putting 5-year-old Nagalem Haile’s life at threat, strangers gathered together to help get her the necessary medical facilities required to save her life.
Soon after her birth, a facial tumor began developing on Haile’s jaw, which started to expand as she grew. The girl and her family lived in a small village in Ethiopia, where they had no access to proper medical facilities.
The growing facial malformation (畸形) caused the girl so much embarrassment (尴尬) that she refused to step out of her house. Apart from that, it was becoming a serious threat to her life with each passing day.
Haile’s ability to breathe and eat was affected. There were a lot of blood vessels (血管) running through the huge mass and if anything broke the tumor, Nagalem could bleed out in minutes.
But God was working out a way to save the child’s life so that she would be able to lead a healthy life. A government official from the U.S. met Nagalem Haile during a mission in Ethiopia which led to a massive search looking for doctors willing to perform the risky surgery.
Dr. Milton Waner answered the call and together with the support of medical charities, Nagalem Haile got the life-saving surgery she so desperately needed, for free!
The organizations helped fly Nagalem and her father. Matios Alafa Haile, to New York City where they prepared them for the 12-hour surgery needed to remove the huge mass. “This type of surgery is very difficult, very dangerous, and certainly life-threatening,” Dr. Waner said.
The medical team removed the facial tumor carefully avoiding any risk to the nerves (神经). “It’s so nice of you! Without you guys, it wouldn’t be like this,” Matios said.
“She is playing enjoying everything outdoors. There is a big difference. May God bless the doctors!”
1. Why didn’t Haile receive her operation in her country?| A．Her family lived in a remote village. |
| B．Her country was backward in medical service. |
| C．She felt embarrassed to be seen in her country. |
| D．She was afraid of dying from poor domestic facilities. |
| A．It contained masses of blood vessels. |
| B．It made it impossible for her to eat food. |
| C．It made her unable to step out of her house. |
| D．It led her to choke and bleed from time to time. |
| A．Communicated by telephone. | B．Called the medical charities. |
| C．Accepted the challenge. | D．Performed the operation. |
| A．Envy. | B．Pride. |
| C．Expectation. | D．Appreciation. |
9 . People have different ways of dealing with a common cold. Some take over the counter medicines such as aspirin while others try popular home remedies(治疗) like herbal tea or chicken soup. Yet here is the tough truth about the common cold: nothing really cures it.
So why do people sometimes believe that their remedies work? According to James Taylor, professor at the University of Washington, colds usually go away on their own in about a week, improving a little each day after symptoms peak, so it's easy to believe it's medicine rather than time that deserves the credit, USA Today reported.
It still seems hard to believe that we can deal with more serious diseases yet are powerless against something so common as a cold. Recently, scientists came closer to figure out why. To understand it, you first need to know how antiviral drugs work. They attack the virus by attaching to and changing the surface structures of the virus. To do that, the drug must fit and lock into the virus like the right piece of a jigsaw(拼图), which means scientists have to identify the virus and build a 3D model to study its surface before they can design an antiviral drug that is effective enough.
The two cold viruses that scientists had long known about were rhinovirus(鼻病毒) A and B. But they didn't find out about the existence of a third virus, rhinovirus C, until 2006. All three of them contribute to the common cold, but drugs that work well against rhinovirus A and B have little effect when used against rhinovirus C.
''This explains most of the previous failures of drug trials against rhinoviruses,'' study leader Professor Ann C. Palmenberg at the University of Wiscons in Madison, US, told Science Daily.
Now, more than 10 years after the discovery of rhinovirus C, scientists have finally built a highly detailed 3D model of the virus, showing that the surface of the virus is, as expected, different from that of other cold viruses.
With the model in hand, hopefully a real cure for a common cold is on its way. Soon, we may no longer have to waste our money on medicines that don't really work.
1. What does the author think of popular remedies for a common cold?| A．They are quite effective. | B．They are slightly helpful. |
| C．They actually have no effect. | D．They still need to be improved. |
| A．By breaking up cold viruses directly. |
| B．By changing the surface structures of the cold viruses. |
| C．By preventing colds from developing into serious diseases. |
| D．By absorbing different kinds of cold viruses at the same time. |
| A．The surface of cold viruses looks quite similar. |
| B．Scientists have already found a cure for the common cold. |
| C．Scientists were not aware of the existence of rhinovirus C until recently. |
| D．Knowing the structure of cold viruses is the key to developing an effective cure. |
| A．Drugs against cold viruses | B．Helpful home remedies |
| C．No current cure for common cold | D．Research on cold viruses |
Wu Ming is a young German born after 1995. To dig into traditional Chinese medicine (TCM), Wu came to China’s Henan province in 2015,
He
Studying TCM also changed Wu’s mind and lifestyle. He used to be addicted to electronic devices and stay up late every night,
