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Russia on Tuesday has become the first country to1(official)register a coronavirus vac c in e(疫苗)and declare it ready for use2widespread inter n ational criticism.President Vladimir Putin said that one of his daughters has received it.Putin emphasizes that the vaccine 3(prove)efficient,4(offer)a lasting protection from the disease.
However,scientists at home and abroad have warned people of the unpredictable risk if the vaccine5(use)before the final test.
Speaking at a government meeting Tuesday,Putin suggested that the vaccine is very safe already.
register for
K l would like to repeat that it has passed all the necessary tests,”he said.K The6(important) thing of all is to ensure full safety of using the vaccine and its7(efficient)."
Putin said that his daughter had a temperature of38degrees Celsius on the day of the first vaccine injection,and then it dropped to just over37degrees on the fbllowing day.After the second shot she again had a slight increase in temperature,but then it was all over.
"She is feeling well and has high number of antibodies/*Putin added.He did not specify8
of his two daughters—Maria or Katerina—received the vaccine.
Russian authorities have said that9(medicine)workers,teachers and other risk groups will be the first10(receive)the vaccine.(文章出处：《时代周*J》，2020-8-12)
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It has been about two weeks since students have completely changed from on-campus classes to online classes,and it has been difficult for most students.So if you felt less productive lately,you are not alone.
It is1(understand)that our mental health depends on regular work and a set routine in order to not2(complete)break down.Therefore it has been3(challenge)for some students to adjust to this transition(转变).According to a recent global study,75percent of us4(feel)worn out nowadays.And working from home is not helping because it is full of distractions—whether kids or dogs.
It is tough5(make)progress when you are just feeling so helpless and Ionely.It is normal to not be able to have increased productivity during times like these.But here is what you can do to feel more productive.
First,you should redefine what productivity looks like.There is so much6(anxious)around what is going on in the world,on top of7we have had to accept new standards to complete our tasks.
Second,livi n g in this coron a virus environ m erit means8(find)new ways of measuri n g your success.It is normal to have a hard time finding motivation during all of this chaos.
Or,you should connect with your workmates to check and see how they are getting along 9work.
Finally,we can press the sent button by pulling away and pausing,which allows40to restore our faith.(文章出处：《福布斯》，2020-8-9)
考题狂练
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Pieter BruegePs masterpiece pain t ing The Harvesters
displays at the Metropolitan Museum of Art in New York City.
It is a1565oil painting on wood panel which is1(know)
for depicting(描绘)peasants who are cutting wheat of the late
summer and autumn harvest season nearly as tall as they are.
While some2(gather)around a tree for a picnic dinner,
others sleep in the shade.But nowadays,if you walk through a
wheat field,you3(basic)see that wheat is only about knee height
The short height is a result of breedi ng(培育)from the seco n d half of the20th century.
The selective breeding4(prefer)genes for reduced height,because they came along with genes for in c reasing production to feed a5(grow)population.
Scientists say that wheat is just one example of how6(history)artwork can allow us to track the7(transform)of food crops over time.
He teamed up with art historian David Vergauwen of Amarant8(collect)such artwork around the world.They are mainly looking at things9we can spot changes in shape,in color and in size.Ultimately,
it is said that the team will create10online research database of historical plant artwork.These people are both artists and scientists who combine the realistic details with scientific studies.(文章出处：《科学美国人》，2020-7-28)
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China has become the first8untry to land a spacecraft on the far side of the moon.The unmanned Chang'e-4probe(探测器~the name was inspired by an ancient Chinese moon goddess1(touch)down last week泊the South Pole-Aitken basin.
Landing on the moon's far side is2(extreme)challenging.Because the moon's body blocks direct radio comm unication with a probe,China first had to put a satellite in orbit above the moon in a spot3it could send signals to the spacecraft and to Earth.The far side of the moon is of particular4(interesting)to scientists because it has a lot of deep craters(环形山)，more so5the familiar near side.
Chinese researchers hope to use the in s trume n ts on board Chang'e-46(find)and study areas of the South Pole-Aitken basin."This really excites scientists,”Carle Pieters,a scientist at Brown University,says,“because it7(mean)we have the chance to obtain information about how the moon8(construct).”Data about the moon's composition,such as how9ice and other treasures it8nt日ins,could help China decide whether10(it) plans for a future lunar(月球的)base are practical.(2020全国I卷)
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In1863the first underground passenger railway in the world opened in London.It ran
for just under seven kilometers and allowed people to avoid terrible1(crowd)on the
roads above as they travelled to and2work.It took three years to complete and was
built using an interesting method.This in e luded diggi ng up the road,3(lay)the track and
then building a strong roof over4top.When all those had been done,the road surface
was replaced.
Steam engines5(use)to pull the carriages and it must have been6(fair)
unpleasant for the passengers,with all the smoke and noise.However,the railway quickly
proved to be a great success and within six months,more than25,000people were using 7every day.
Later,engineers8(ma nage)to construct railways in a system of deep turn e ls,
which became known as the tube.This development was only possible with the 9(i n troduce)of electric-powered engines and lifts.The central Lon d on Railway was
one of the most10(success)of these new lines,and was opened in1900.It had white-
painted tunnels and bright red carriages,and proved extremely popular with the public.
(2017全国卷)
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Scientists have discovered that the Great Pyramid of Giza is not1(exact)even
(平整的).But really not by much.This pyramid is the oldest of the World's Seven Wonders.
The pyramid's exact size2(puzzle)experts for centuries,as the“more than21acres
of hard,white casting stones H3covered the pyramid were removed long ago.
Engineer Glen Dash says his team used a new measuring approach4(involve)
finding the surviving remains of the casting stones5(help)them determine where the 6(origin)edge was.
The question which most fascinates the engineers,however,is not how the Egyptians
designed and built the pyramid4,500years ago,but7they got it so close to perfect.
“8can only speculate(推测)the extreme difficulties of laying out these lines with such 9(precise).They accomplished everything10(use)only the limited tools they had
at that time.”
He says his theory is that the Egyptians laid out their design on a g「id(坐标方
格)，noting that the great pyramid is oriented(定位)only slightly away from the cardinal
directions—an amount that is"tiny,but similar,”archeologist Atlas Obscura points out.(改
编自2018年大学英语六级考卷)
"OCX
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Did Sarah Josephs Hale write Mary's Little Lamb,the famous song about a girl1 name was Mary?It is still questioned by many people.But it is clear that this woman 2(know)for writing it was one of America's most fascinating characters.In honor of the poem's3(publish)on May24,1830,here is some introduction to the author's life.
Hale was not just a writer,but also an enthusiastic social worker,who was particularly obsessed(着迷的)with an4(idea)New England,which she associated with abundant Thanksgiving meals that she claimed had"a deep moral in f luence".She began a nationwide campaign to have a national holiday that would bring families together while5(celebrate) the traditional festivals.
In1863,after seventeen years*6(continue)efforts including letters to five presidents,Hale got it.President Abraham Lincoln,during the Civil War,7(issue)a law setting aside the last Thursday in November for a holiday.
The true authorship of Mary's Little Lamb is disputed(有争议的).According to New England Historical Society,Hale wrote only one part of the poem,but claimed authorship.
8(regard)of the author,it seems that the poem9(inspire)by a real event.When young Mary Sawyer was followed to school by a lamb in1816,10caused some problems.A bystander named John Roulstone wrote a poem about the event.Then,at some point,Hale herself seems to have helped write it.(改編自20佃年大学英语六级考卷)
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When Elon Musk says that his new priority is using artificial intelligenee to build domestic robots,we should look forward to seeing his1(achieve)respectfully.
Mr.Musk is a guy2always gets things done properly.The3(found)of two tech companies,Tesla Motors and SpaceX,is bringing electric vehicles to popular market and enabling people to live on other plane
ts.This sounds like hot ail•(空话)，but the near$13 billion fortune he has earned comes from practical achievements.
A lot of clever people are concerned about artificial intelligence,4(fear)that robots will one day become so5(power)that they will murder all of us.These fears are mostly6(necessary):we huma ns are gen erally wise eno ugh to man age these problems7speed and care.
And you can just think of how wonderful it would be if you8(have)a live-in robot.It could be like9(employ)a babysitter and a nurse rolled in one.Or,if that required emotional intelligenee beyond the power of Mr.Musk's imagined machine,at least some o ne10(cut)up the carrots,wash the car and mow the lawn.Once purchased and trained,this would allow the causal user to save money and time,freeing up precious space in our busy lives to read a good look.
It is great,isn't it?(改编自2018年大学英语六级考卷)

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