As for child vaccinations, parents usually get paperwork lost, or forget whether their child is up to date. Now a group of MIT researchers has developed a new way to address this problem: inserting the record directly into the skin. Along with the vaccine, a child would be injected with a bit of dye that is invisible to the naked eye but easily seen with an app that shines special light onto the skin. The dye would be expected to last up to five years.
The system would provide quick and easy access to vaccination history, and add little to the cost or risk of the procedure. “In developing countries where medical records may not be as complete or as accessible, there can be value in having medical information directly associated with a person,” says Ana Jaklenec, lead author of the study.
Delivering the dye required the researchers to find something that was safe and would last long enough to be useful. “That’s really the biggest challenge we overcame in the project,” says Jaklenec, adding that the team tested a number of dyes hut could not find any that lasted when exposed to sunlight. The team ended up using a technology called quantum dots, which were originally developed to label cells during research. The dye has been shown to be safe in humans.
“When people were still getting vaccinated against smallpox, they got a visible scar on their arm that made it easy to identify who had been vaccinated and who had not. But obviously, we didn't want to give people a scar.” Jaklenec says, noting that her team was looking for something that couldn’t be seen. The researchers also wanted to avoid technologies that would raise even more privacy concerns, such as databases with names and identifiable data.
The researchers hope to add more detailed information to the dots, such as the date of vaccination. Along with them, the team eventually wants to inject sensors that could also potentially be used to track aspects of health such as insulin levels in diabetics.
1.What can we learn from the first 2 paragraphs?
A.A new system has been developed to track the history of vaccination.
B.The cost of updating vaccination history is high.
C.The dye injected into children can be seen with naked eyes easily.
D.Carrying around one’s medical record is convenient.
2.What was the biggest challenge for the researchers?
A.Labeling cells. B.Delivering a number of dyes.
C.Finding the safe and long-lasting material. D.Inventing a technology called quantum clots.
3.It can be learned from the text that the researchers________________.
A.are trying to find a vaccination against diabetics.
B.have injected sensors to track aspects of health.
C.are sure to leave no scars on those who are vaccinated.
D.hope to add more detailed information to the quantum dots while maintaining privacy.
4.How does the author feel about the project?
A.Disappointed B.Enthusiastic
C.Indifferent D.Uncertain
高三英语阅读理解中等难度题
As for child vaccinations, parents usually get paperwork lost, or forget whether their child is up to date. Now a group of MIT researchers has developed a new way to address this problem: inserting the record directly into the skin. Along with the vaccine, a child would be injected with a bit of dye that is invisible to the naked eye but easily seen with an app that shines special light onto the skin. The dye would be expected to last up to five years.
The system would provide quick and easy access to vaccination history, and add little to the cost or risk of the procedure. “In developing countries where medical records may not be as complete or as accessible, there can be value in having medical information directly associated with a person,” says Ana Jaklenec, lead author of the study.
Delivering the dye required the researchers to find something that was safe and would last long enough to be useful. “That’s really the biggest challenge we overcame in the project,” says Jaklenec, adding that the team tested a number of dyes hut could not find any that lasted when exposed to sunlight. The team ended up using a technology called quantum dots, which were originally developed to label cells during research. The dye has been shown to be safe in humans.
“When people were still getting vaccinated against smallpox, they got a visible scar on their arm that made it easy to identify who had been vaccinated and who had not. But obviously, we didn't want to give people a scar.” Jaklenec says, noting that her team was looking for something that couldn’t be seen. The researchers also wanted to avoid technologies that would raise even more privacy concerns, such as databases with names and identifiable data.
The researchers hope to add more detailed information to the dots, such as the date of vaccination. Along with them, the team eventually wants to inject sensors that could also potentially be used to track aspects of health such as insulin levels in diabetics.
1.What can we learn from the first 2 paragraphs?
A.A new system has been developed to track the history of vaccination.
B.The cost of updating vaccination history is high.
C.The dye injected into children can be seen with naked eyes easily.
D.Carrying around one’s medical record is convenient.
2.What was the biggest challenge for the researchers?
A.Labeling cells. B.Delivering a number of dyes.
C.Finding the safe and long-lasting material. D.Inventing a technology called quantum clots.
3.It can be learned from the text that the researchers________________.
A.are trying to find a vaccination against diabetics.
B.have injected sensors to track aspects of health.
C.are sure to leave no scars on those who are vaccinated.
D.hope to add more detailed information to the quantum dots while maintaining privacy.
4.How does the author feel about the project?
A.Disappointed B.Enthusiastic
C.Indifferent D.Uncertain
高三英语阅读理解中等难度题查看答案及解析
China has a growing number of middle-class parents who _____ for years to get their only child into a top school．
A．had been saved B．have saved
C．had saved D．have been saved
高三英语单项填空中等难度题查看答案及解析
Every year, 1.5 million kids around the world die as a result of not getting vaccines (疫苗). This is partly because transporting and storing medicines can be a huge challenge in some countries.
Anurudh Ganesan, 17, knows this firsthand. When he was a baby in India, his grandparents carried him 10 miles to a health clinic in a remote village to receive a vaccine. But by the time they arrived, the vaccines were no longer usable because they had been overheated.
Vaccines, Anurudh later learned, must be kept cool to stay effective. But refrigerating them requires electricity or ice – precious resources that many developing countries lack.
Although Anurudh eventually received the vaccine he needed, his experience as a baby and the sad reality that so many other children aren’t as lucky motivated him to take action. The high school student invented Vaxxwagon, a portable vaccine-carrying device that generates its own power to keep lifesaving medicines cool as they’re delivered to remote areas around the world.
Anurudh first got his idea for Vaxxwagon in 2014. He read several textbooks to learn everything he could about refrigeration, and then he did research online to learn more about vaccines. Rather than relying on electricity or ice, Anurudh figured out a way to use wheels to power a refrigeration system for about eight hours. The entire rechargeable cooling system can be pulled to areas in need of vaccines by a bicycle, a car, or an animal. Eventually, Anurudh took his design to professors at Johns Hopkins University for advice. Not only did they confirm Vaxxwagon could work, but they offered him funding to help build it.
Anurudh was rewarded with the 2015 Google Science Fair LEGO Education Builder Award for his invention. Anurudh says his final goal is to start selling Vaxxwagon to relief organizations, so it can be used to help people around the world.
Anurudh, who plans to pursue engineering degree in college, says, “Don’t give up on your ideas. But always try to help others with your projects. That’s the point of engineering – to help people.”
1.Why do many children die every year?
A. They lack qualified medical teams.
B. They cannot afford usable medicines.
C. They don’t have an electricity system.
D. They have no access to effective vaccines.
2.What is special about Vaxxwagon?
A. It can serve as a fridge.
B. It can produce safe vaccines.
C. It can detect deadly diseases.
D. It can be a means of transport.
3.Which of the following words can best describe Anurudh?
A. Caring and creative.
B. Modest and sympathetic.
C. Loyal and determined.
D. Honest and hard-working.
4.What can we learn from the story?
A. Practice makes perfect.
B. One good turn deserves another.
C. Motivation is the mother of success.
D. All things are difficult before they are easy.
高三英语阅读理解困难题查看答案及解析
American parents usually think that their child should not have more pocket money than the children with whom he regularly connects, even if they are wealthier．But neither are children expected to compare with the richer if a large family, heavy responsibilities, or other conditions make it necessary to give a child less spending money than is customary （惯例的）in the neighborhood．
Whatever the pocket money is, its entire use is not controlled by the parents, because a child learns to use money correctly only through dealing with it himself．If a seven-year-old child gets a quarter as a week pocket money and is made to put it all in his piggy bank to save it up, he gets no idea what the real use for the money is．He gets the shiny coins and they soon disappear．
The idea of a bank account is too early for so small a child, although he can be made to understand and enjoy saving his coins—not all of them, only a part of what he receives—to buy something he especially wants．By the time he is eight he is old enough to take part in the opening of his own savings account, parents may take him to the bank, open a savings account for him and encourage him to put a certain quantity or any checks he receives as gifts into the bank and watch his bank savings grow as entry by entry（存入） is made．
He will be saving, earning, and spending suitable quantities all along in order to learn how to manage money and to keep him in a favorable position with his friend．The boy who can't join his fellows in a sweet shop once in a while, because he has to save every cent he gets or earns for some big unknown project his parents have chosen for him, is a sorry child．
1.Choose the best exolaration for the underlined part in the second paragraph.
A．It is a kind of bank run by children．
B．It is a contralre in the shape of a pig for saving coins.
C．It is a certain place in which pigs are raise．
D．It is a bank whose building looks like a pig
2.Which of the following statements is TRUE?
A．Most of the rich people in America give children much pocket money．
B．American children usually have their bank accounts until they are eight．
C．American parents seldom care for their children's spending money．
D．American children begin to learn how to manage money when very young．
3.Suppose an 8-year-old child receives 10 dollars as his birthday gift, he may probably ____．
A．spend the money on the things he wants
B．compare the gift with that of his friend
C．have most of it saved in the bank
D．put all the money in his piggy bank
4.Why does the writer think the boy is a sorry one if he saves every cent he gets or earns?
A．Because he can not manage his money and is kept himself in an unfavorable position
B．Because he can not join the fellows in a sweet shop once in a while
C．Because he can not learn the use of money through spending it himself
D．Because he can not have any other choice but save, earn of spend money
高三英语阅读理解中等难度题查看答案及解析
A survey says what parents say and do in daily life usually has a(n) ______ influence on their child.
A．logical B．permanent C．avoidable D．beneficial
高三英语单项填空中等难度题查看答案及解析
What parents say and do in daily life usually have a(n) _________ influence on their child.
A. practical B. avoidable C. beneficial D. permanent
高三英语单项填空中等难度题查看答案及解析
was to blame.
A.The parents as well as their child B.Not the parents but their child
C.Neither the child nor his parents D.Both the parents and their child
高三英语单项填空中等难度题查看答案及解析
The schooling of the child at home becomes a family activity．Parents get involved in every step of the learning procedure．Field trips and experiments become family activities．Thus, the child receives more quality time with his parents．The entire family shares games, housework and projects．Family closeness becomes the focus here．
Individual attention is another obvious benefit of home-schooling．For example, if your child needs more time to learn math, then he can reduce the time for his English lessons．There are no fixed hours of learning per subject．This means that a child has the advantage of focusing additional time on the subject that seems hard．
Home-schooling gives the parent more control over the influences that affect your child．The growth and development of your child is established by you child is established by you and you determine what your child needs to do of learn．
Competition is limited when it comes to home-schooling, The child does not need to prove his ability with regard to other children or compete for attention．Since parents have a deep understanding of their child, they can plan the learning program to keep the child’s interest．It is also possible to mix difficult tasks with fun activities．A tough hour of Algebra(代数)can be followed by trip to the nearest museum or a vacation that you can make part of your child’s education．Some children learn through reading, while others need to write, and still others need to see objects in action．
More and more parents are disappointed with the public school system．They believe that their children are being pushed too hard or too little．Some parents themselves have unhappy memories of their own public school experience and that motivates them to choose home-schooling when it comes to their own children．
1.According to the first paragraph, the benefit of home-schooling is that________
A．children needn’t spend so much time learning English
B．children don’t have to worry about their poor subjects
C．parents are important to the growth of their children
D．children have more time to stay with their parents
2.Which of the following statements is true according to the passage?
A．Parents can make their children more competitive．
B．Children don’t have to face competition with other children．
C．Parents can help their children work out the problems．
D．Parents can encourage their children to join in more activities．
3.Why are many parents likely to choose home-schooling for their children?
A．Because they can save a large amount of money．
B．Because their children are often punished by teachers．
C．Because they have unhappy memories of public school system．
D．Because they can teach their children by themselves．
4.According to the passage, the author’s attitude to home-schooling is________
A．favorable B．disappointed C．satisfied D．surprised
高三英语阅读理解中等难度题查看答案及解析
As a child, I was _________to keep quiet when my parents were discussing something, while parents nowadays often ask for their children’s opinions.
A. demanded B. hoped C. forbidden D. required
高三英语单项填空中等难度题查看答案及解析
As a child, I lived on a college campus with my parents. Their students often visited and did jigsaw puzzles (拼图) with me, for which I quickly discovered my_______.I would sit alone for hours_________building a puzzle. My college “friends” would be_________next time they came.
Soon I_______ up from 500-piece puzzles to my highest _______:a 3,000-piece one. I was so_______at the thought of tearing it apart that I moved the finished puzzle_______ onto a large board and kept it as it was until we moved away and I _______ playing with puzzles.
Recently I can't help but_______my old days, when I could spend hours looking at small, oddly shaped cardboard pieces and ________them into appropriately spaced positions, enjoying myself.
I now live in a world of divided________, constantly jumping from one form of entertainment to another.________，I dislike it when I open my phone to send a quick text, but only to find myself, an hour later, clicking on countless YouTube videos that leave no impression on me. I miss being someone who didn't________ to be bombed with so many flashy external stimuli to be ________ .
I think a puzzle or two would force me to be another version of myself, a less impatient one. When I get home this summer, I'll________ the box of old toys somewhere in our basement. Maybe I'll find what I'm looking for.
1.A.concern B.destination C.balance D.love
2.A.dreaming of B.concentrating on C.complaining about D.hesitating about
3.A.embarrassed B.impressed C.confused D.relieved
4.A.leveled B.mixed C.showed D.sped
5.A.challenge B.design C.achievement D.champion
6.A.guilty B.light-hearted C.silly D.heartbroken
7.A.at random B.with care C.on occasion D.step by step
8.A.quit B.continued C.escaped D.forbade
9.A.analyse B.regret C.recall D.doubt
10.A.placing B.rolling C.pushing D.dragging
11.A.attention B.communication C.information D.opinions
12.A.Thankfully B.Honestly C.Additionally D.Interestingly
13.A.fail B.afford C.need D.offer
14.A.admired B.connected C.disturbed D.entertained
15.A.take over B.breaks up C.search through D.put away
高三英语完形填空简单题查看答案及解析