1 . It’s 4 a.m. on Monday when my colleague, Yi Bingkun, and I finished the night shift. It’s the 50th hour since our medical team arrived in Wuhan to help fight against the novel corona virus (新型冠状病毒). The situation here is far more grievous than what we imagined, with more suspected cases and an acute shortage of medical staff. We are here to bring them hope, but it seems that we assume more responsibilities.
The ward was almost overloaded during our first night shift and we continued to receive more patients. My colleague and I plunged into work without delay after wearing protective suits.
However, an emergency occurred when a patient went into sudden cardiac arrest when we had just changed shifts. Yi Bingkun rushed to give chest compressions to the patient to make his heart beat again and I called a doctor for help.
Though all rescue measures failed, the patient’s family, however, sent their gratitude to us. Their every single: “Thank you” made me feel warm and that the efforts we had made were worthwhile. But Kun brought me more warmth. I once asked him whether he felt afraid about the possibility of becoming infected when saving the patient. He told me that “Yes, I was really scared at the time because I do have my family and my kid. But I was more afraid that the life might disappear in front of me.” I really admire his courage. Our night shift should have been finished at midnight, but it ended at 3 a. m. that night. We found our clothes were wet after we took off protective suits. What is impressive is that my colleagues messaged us, asking why Kun and I didn’t come back with the clock pointing to 1 a.m., 2 a.m. or even 3 a.m. They urged us to let them know we were okay as soon as we came back.
The weather is really cold but we feel warm from the bottoms of our hearts. Come on, all my colleagues! Come on, Wuhan! Come on, China!
1. When did the medical team arrive in Wuhan?| A．On Saturday. | B．On Sunday. |
| C．On Monday. | D．On Tuesday. |
| A．Puzzling. | B．Positive. |
| C．Satisfactory. | D．severe. |
| A．He soon recovered from the illness. | B．He finally died of serious illness. |
| C．He was rushed to another hospital. | D．He was infected by a wild animal. |
| A．adventurous | B．lucky |
| C．brave | D．careless |
2 . The argument that human-caused carbon emissions(排放) are merely a drop in the bucket compared to greenhouse gases generated by volcanoes has been making its way around the rumor mill for years. And while it seems to be reasonable, the science just doesn't back it up.
According to the US Geological Survey (USGS), the world's volcanoes, both on land and undersea, generate about 200 million tons of carbon dioxide (CO2) annually, while our automotive and industrial activities cause some 24 billion tons of CO2 emissions every year worldwide. Despite the arguments to the contrary, the facts speak for themselves: Greenhouse gas emissions from volcanoes compose less than one percent of those generated by today's human activities.
Another indication that human emissions surpass those of volcanoes is the fact that atmospheric CO2 levels, as measured by sampling stations around the world, have gone up consistently year after year regardless of whether or not there have been major volcanic eruptions in specific years. “If it were true that individual volcanic eruptions dominated human emissions and were causing the rise in carbon dioxide concentrations, then these carbon dioxide records would be full of spikes —one for each eruption,” says Coby Beck, a journalist writing for online environmental news. “Instead, such records show a smooth and regular trend.”
Furthermore, some scientists believe that volcanic eruptions, like that of Mt.St. Helens in 1980 and Mt. Pinatubo in 1991, actually lead to short-term global cooling, not warming, as sulfur dioxide (SO2), ash and other particles in the air and stratosphere(平流层) reflect some solar energy instead of letting it into Earth's atmosphere. SO2, which converts to sulfuric acid aerosol, when it hits the stratosphere, can linger there for as long as seven years and can exercise a cooling effect long after a volcanic eruption has taken place.
Scientists tracking the effects of the major 1991 eruption of the Philippines’ Mt. Pinatubo found that the overall effect of the blast was to cool the surface of the Earth globally by some 0.5 degrees Celsius a year later, even though rising human greenhouse gas emissions and an El Nino event caused some surface warming during the 1991-1993 study period.
In an interesting twist on the issue, British researchers last year published an article in the peer reviewed scientific journal Nature showing how volcanic activity may be contributing to the melting of ice caps in Antarctica but not because of any emissions, natural or man-made. Instead, scientists Hugh Corr and David Vaughan of the British Antarctic Survey believe that volcanoes underneath Antarctica may be melting the continents ice sheets from below, just as warming air temperatures from human-induced emissions erode them from above.
1. According to Paragraph 1, some people argue that .| A．their opinion is supported by science. |
| B．volcanoes generate most of the greenhouse gases. |
| C．human activities are to blame for greenhouse gases. |
| D．carbon emissions produced by volcanoes are increasing. |
| A．Sudden increases. | B．Smooth trends. |
| C．Stable regularities. | D．Sharp declines. |
| A．They brought about global warming. |
| B．They actually partly cooled the surface of the Earth. |
| C．They melted the ice sheets in Antarctic from above. |
| D．They dominated human emissions in greenhouse effect. |
| A．compare the results of the studies. |
| B．contradict a view held by some people. |
| C．present new findings for greenhouse phenomenon. |
| D．report the effects of CO2, in greenhouse phenomenon. |
3 . Most adults find it hard to recall events from their first few years of life and now scientists have found exactly when these childhood memories fade(消失).
A new study has found that most three-year-olds can recall a lot of what happened to them over a year earlier, and these memories persist while they are five and six, but by the time they are over seven, these memories decline(衰退) rapidly.
Most children by the age of eight or nine can only recall 35% of their experiences from under the age of three, according to the new findings.
The scientists behind the research say this is because at around this age the way we form memories begins to change. They say that before the age of seven children do not have a sense of time and place in their memories. In older children, however, the early events they can recall tend to be more adult-like in the way they are formed. Children also have a far faster rate of forgetting than adults. The findings also help to explain why children can often have clear memories of events but then forget them just a couple of years later.
The youngsters first visited the laboratory at the age of three and discussed six unique events from their past, such as family outings, trips to the zoo, and the first day of school. The children then returned for a second session between the ages of five and nine to discuss the same events. The researchers found that between the ages of five and seven, the amount of memories the children could recall remained between 63 -72 percent. However, the amount of information eight-to nine-year-old children could recall dropped to 35 and 36 percent.
1. What does the new study tell us?| A．Childhood memories decline with years. |
| B．Three-year-old kids are the cleverest. |
| C．Childhood memories can fade easily. |
| D．Some adults cannot recall past events. |
| A．Change. | B．Remain. |
| C．Appear. | D．Return. |
| A．Adults cannot have clear memories of past events. |
| B．Children can think like adults when they get older. |
| C．Children under 7 years old have different ways of forming memories. |
| D．Children often forget things because they have no idea of time or place. |
| A．refused to discuss the same events |
| B．remembered all their family outings |
| C．could recall 72 percent of their past events |
| D．only remembered a small part of their past events |
4 . President Bush got a firsthand look at the heavily damaged Pentagon complex (五角大楼), where a hijacked (被劫持的) American Airlines Flight 77 crashed and exploded on Tuesday morning. First lady Laura Bush, visited doctors, nurses and victims of the attack at Walter Reed Army Medical Center.
“It makes me sad on the one hand,” the president told rescue workers. “It also makes me angry. Our country will, however, not be cowed by terrorists.”
Before the president's tour, firefighters had finally put out the fires and put a huge American flag near the broken wing of the building to welcome him. Rescue workers searching the remains of the damaged wing all but lost hope of finding any survivors. Officials now estimate the number of dead or missing in the Pentagon at 200.
“The deadly attacks, which were carried out yesterday against our country, were more than acts of terror. They were acts of war,” Bush said. “This will require our country to unite in determination and resolve (决心).”
1. When did Bush pay his visit to Pentagon after the September 11 attacks?| A．On Monday. | B．On Tuesday. |
| C．On Wednesday. | D．On Thursday. |
| A．Frightened. | B．Attacked. |
| C．Worried. | D．Puzzled. |
| A．an interview of president Bush on the spot |
| B．a review of Tuesday morning’s attack towards USA |
| C．a report on the president’s tour to Pentagon |
| D．an editorial (社论) of the terrorist attack |
5 . 
News anchors(主播) must have been reluctant to read out the following news: Xin Xiaomeng began working as the world’s first female artificial(人工的) intelligence news anchor at Xinhua News Agency on Sunday, three months after a male robot joined the profession.
Unlike previous news robots though, Xin does not read news like a cold machine; she reads it almost like a human being. The muscles on her face stretch and relax-and her reactions change-as she continues reading. That’s why many news anchors were worried: Will AI replace us in the near future?
To find the answer, we have to analyse the technologies that support Xin at her job. Three key technologies are used to support Xin. First, samples of human voices are collected and synthesized (合成). This is followed by the collection and synthesis of human muscle movement samples. And third the voices and movements are married in a way that when the Al news anchor reads, the micro -electric motors behind her face move to make her expressions seem more human.
Yet we need a thorough knowledge of deep leaning technology to make a robot imitate a person’s voice. The developer needs to collect tens of thousands of pieces of pronunciations, input them Into the machine and match them with the text or the Al to lean and read. The process for imitating facial movements is similar. The developer has to analyse the movements of the 53 muscles in the human face, make a model set from the collected data for the AI news anchor to lean, and imitate the movements of facial muscles via programs
Both the technologies used to make Xin’s performance impressive are mature. The real difficulty lies in the third -the technology to match the pronunciations with facial movements so that Xin expressions vary according to the content of the news report. In fact, Xins expressions don' t always change according to the content. As a result, her expressions look anything but human. Actually. AI is still no match for human qualities.
1. What does the underlined word "reluctant "in the first paragraph mean?| A．Delighted. | B．Unwilling. | C．Confused. | D．Optimistic. |
| A．They read news without expressions. | B．They looked like a human being |
| C．They could interview sports stars | D．They could interact with audience. |
| A．This technology is very perfect so far |
| B．This technology is quite popular now |
| C．This technology remains at the theoretical stage |
| D．This technology is far from mature. |
| A．human news anchors should learn from AT anchors to save their jobs |
| B．Al anchors perform much better than human news anchors at present |
| C．Al news anchors won 't replace human news anchors in the near future |
| D．Xin Xiaomeng s expressions vary so naturally that they are true to life |
6 . The effects of coffee consumption on health have long been a subject of conflict and uncertainty.Since the 1980s,some have spoken out against coffee as harmful to health,while others have welcomed coffee for its supposed benefits to health.
According to a scientific report,mild coffee consumption,three to five cups per day,can he taken as a healthy dietary pattern,along with other healthful behaviors.The report also says that coffee consumption helps reduce the risk of heart disease and it protects against Parkinson's disease.
According to Dr.Donald Hensrud of Mayo Clinic,high consumption of coffee has health risks.Dr.Hensrud mentions the dangers of high coffee consumption for people with a certain illness that slows the breakdown of caffeine in the body.Some studies said that drinking two or more cups of coffee daily can actually increase the risk of heart disease in these people.
According to conclusions from a recent study led by Dr.Gregory Marcus,a doctor from the University of California San Francisco,daily moderate consumption of caffeine,less than 4 cups,is not associated with these issues.
Until the scientific community reaches a general agreement on the effects of coffee consumption on human health,it will be up to the individual to decide whether the benefits of drinking coffee are greater than the risks.
When informed of these possible health benefits and harms of drinking coffee,Harwood,a high school student stated,"Even though there might be some negative effects of drinking coffee,for the most part,coffee drinking sounds good for health.Not to mention I need coffee to stay awake."
1. What is the people's attitude towards the effects of coffee on health according to Paragraph 1?| A．Disapproving. | B．Tolerant. |
| C．Doubtful. | D．Mixed. |
| A．Personal. | B．Slight. |
| C．Reasonable. | D．Heavy. |
| A．He'll keep on drinking coffee. | B．He loves his high school life. |
| C．He often falls asleep in class. | D．He has some health problems. |
| A．Why People Love Coffee? | B．How Coffee Affects Health? |
| C．The Culture of Coffee Drinking | D．The New Findings of Heart Disease |
Children who eat an apple or pear a day may be exceeding(超过) the pesticide(杀虫剂) safety limit because of remains on the fruit，according to research.
Using data of the British Department of Environment on pesticides on fruit collected from supermarkets，scientists thought that each day some children would get a poisonous level of pesticides.
The research，published on Sunday，says the government repeatedly claims that the levels of pesticide are safe because，instead of measuring individual apples， researchers buy 10，crush them and take an average reading to see if they are safe. This is the internationally agreed method of checking remains.
But government figures show that the pesticide is not averagely spread across the batch(一批)，and one or two apples could contain 90% or more of the pesticide in the batch.
It used mathematical modeling to measure exposure(暴露) to pesticides for children aged between 18 months and four years old. The pesticides involved can destroy children’s hormones and some are suspected(怀疑) of causing cancer.
The good news for British fruit growers is that samples grown in this country had lower residue level than imported fruit，so buying home-produced fruit will reduce the danger，said Emily Diamand，one of the Earth’s senior food researchers and one of the authors of the report.
1. The reason why “Apple a day may poison children” is that ______.
| A．there are some pests in the apple |
| B．children would get a poisonous level of pesticides because of the remains on the apple |
| C．there are always more pesticides on the apples produced in Britain |
| D．the apple is too hard for children to eat |
| A．two apples，crush them and take an average reading to see if they are safe |
| B．five apples，crush them and test to see if they are safe |
| C．ten apples，crush them and take an average reading to see if they are safe |
| D．eighty apples，and then test them by crushing |
| A．remains | B．pesticide |
| C．poison | D．medicine |
| A．The remains of the pesticides can do harm to the children’s health. |
| B．The remains of the pesticides can do harm to the children’s hormones. |
| C．Some remains of the pesticides are suspected of causing cancer. |
| D．For safety，we had better not import apples from Britain. |
However, research has proved this method inefficient and ineffective. The truth is, the human brain simply cannot consciously remember process and use hundreds of or thousands of grammar rules. Real speech is too fast.
Native speakers do not learn grammar in this way, but rather intuitively (凭直觉地) and unconsciously. They learn in a complete way, not by attempting to memorize individual grammar rules. As a result, native speakers use correct grammar fluently and easily.
Fortunately, it is possible for English learners to learn grammar this way. Language teacher Blaine Ray has developed a unique "intuitive" approach to teach English grammar. Her system uses "point of view" stories to teach the patterns of English grammar, allowing students unconsciously to acquire correct grammar without ever studying grammar rules.
In this system, the teacher first tells a simple story from one point of view. It may be told about the past, then repeated, but beginning with "since he was a child"; then repeated again, but this time about the future.
Listening to these stories allows students intuitively and effortlessly to learn English grammar and makes them be able to use it correctly when they speak.
Point of View Stories is a creative new way to study English grammar, and offers hope to millions of frustrated English learners.
1. Which of the following ways is approved by the author?
| A．Remembering grammar rules. |
| B．Taking grammar tests. |
| C．Analyzing grammatical structure. |
| D．Applying language to situations. |
| A．Talking to native speakers when learning. |
| B．Learning English grammar in a complete way. |
| C．Using correct English grammar. |
| D．Learning English grammar from a teacher. |
| A．native speakers learn English grammar by listening to stories |
| B．Blaine Ray’s method gets students to grasp correct grammar unconsciously |
| C．Blaine Ray teaches grammar rules by asking students to tell stories |
| D．it’s hard for students to speak correct English in the new system |
| A．criticize the traditional way of learning grammar |
| B．introduce a new way to study English grammar |
| C．ask students to learn English grammar by listening to stories |
| D．tell us how the native speakers learn English grammar |
| A．because the analytical approach can let them learn English grammar effortlessly |
| B．because the analytical approach makes them be able to use English correctly when they speak. |
| C．because the analytical approach can’t let them memorize and then apply a great number of rules. |
| D．because Real speech is too fast. |
