［2019年全国I卷，C篇］
As data and identity theft becomes more and more common, the market is growing for biometric (生物测量) technologies — like fingerprint scans — to keep others out of private e-spaces. At present, these technologies are still expensive, though.
Researchers from Georgia Tech say that they have come up with a low-cost device (装置) that gets around this problem: a smart keyboard. This smart keyboard precisely measures the cadence (节奏) with which one types and the pressure fingers apply to each key. The keyboard could offer a strong layer of security by analyzing things like the force of a user's typing and the time between key presses. These patterns are unique to each person. Thus, the keyboard can determine people's identities, and by extension, whether they should be given access to the computer it's connected to — regardless of whether someone gets the password right.
It also doesn't require a new type of technology that people aren't already familiar with. Everybody uses a keyboard and everybody types differently.
In a study describing the technology, the researchers had 100 volunteers type the word “touch”four times using the smart keyboard. Data collected from the device could be used to recognize different participants based on how they typed, with very low error rates. The researchers say that the keyboard should be pretty straightforward to commercialize and is mostly made of inexpensive, plastic-like parts. The team hopes to make it to market in the near future.
28. Why do the researchers develop the smart keyboard?
A. To reduce pressure on keys. B. To improve accuracy in typing.
C. To replace the password system. D. To cut the cost of e-space protection.
29. What makes the invention of the smart keyboard possible?
A. Computers are much easier to operate. B. Fingerprint scanning techniques develop fast.
C. Typing patterns vary from person to person. D. Data security measures are guaranteed.
30. What do the researchers expect of the smart keyboard?
A. It'll be environment-friendly. B. It'll reach consumers soon.
C. It'll be made of plastics. D. It'll help speed up typing.
31. Where is this text most likely from?
A. A diary. B. A guidebook. C. A novel. D. A magazine.
［2019年全国I卷，D篇］
During the rosy years of elementary school (小学), I enjoyed sharing my dolls and jokes, which allowed me to keep my high social status. I was the queen of the playground. Then came my tweens and teens, and mean girls and cool kids. They rose in the ranks not by being friendly but by smoking cigarettes, breaking rules and playing jokes on others, among whom I soon found myself.
Popularity is a well-explored subject in social psychology. Mitch Prinstein, a professor of clinical psychology sorts the popular into two categories: the likable and the status seekers. The likables' plays-well-with-others qualities strengthen schoolyard friendships, jump-start interpersonal skills and, when tapped early, are employed ever after in life and work. Then there's the kind of popularity that appears in adolescence: status born of power and even dishonorable behavior.
Enviable as the cool kids may have seemed, Dr. Prinstein's studies show unpleasant consequences. Those who were highest in status in high school, as well as those least liked in elementary school, are “most likely to engage (从事) in dangerous and risky behavior.”
In one study, Dr. Prinstein examined the two types of popularity in 235 adolescents, scoring the least liked, the most liked and the highest in status based on student surveys (调查研究). “We found that the least well-liked teens had become more aggressive over time toward their classmates. But so had those who were high in status. It clearly showed that while likability can lead to healthy adjustment, high status has just the opposite effect on us.”
Dr. Prinstein has also found that the qualities that made the neighbors want you on a play date — sharing, kindness, openness — carry over to later years and make you better able to relate and connect with others.
In analyzing his and other research, Dr. Prinstein came to another conclusion: Not only is likability related to positive life outcomes, but it is also responsible for those outcomes, too.“Being liked creates opportunities for learning and for new kinds of life experiences that help somebody gain an advantage,” he said.
32. What sort of girl was the author in her early years of elementary school?
A. Unkind. B. Lonely. C. Generous. D. Cool.
33. What is the second paragraph mainly about?
A. The classification of the popular. B. The characteristics of adolescents.
C. The importance of interpersonal skills. D. The causes of dishonorable behavior.
34. What did Dr. Prinstein's study find about the most liked kids?
A. They appeared to be aggressive. B. They tended to be more adaptable.
C. They enjoyed the highest status. D. They performed well academically.
35. What is the best title for the text?
A. Be Nice — You Won't Finish Last B. The Higher the Status, the Better
C. Be the Best — You Can Make It D. More Self-Control, Less Aggressiveness
［2017年全国I卷D篇］
A build-it-yourself solar still（蒸馏器） is one of the best ways to obtain drinking water in areas where the liquid is not readily available. Developed by two doctors in the U.S. Department of Agriculture, it's an excellent water collector. Unfortunately, you must carry the necessary equipment with you, since it's all but impossible to find natural substitutes. The only components required, though, are a 5＇×5＇sheet of clear or slightly milky plastic, six feet of plastic tube, and a container — perhaps just a drinking cup — to catch the water. These pieces can be folded into a neat little pack and fastened on your belt.
To construct a working still, use a sharp stick or rock to dig a hole four feet across and three feet deep. Try to make the hole in a damp area to increase the water catcher's productivity. Place your cup in the deepest part of the hole. Then lay the tube in place so that one end rests all the way in the cup and the rest of the line runs up — and out — the side of the hole.
Next, cover the hole with the plastic sheet, securing the edges of the plastic with dirt and weighting the sheet's center down with a rock. The plastic should now form a cone (圆锥体) with 45-degree-angled sides. The low point of the sheet must be centered directly over, and no more than three inches above, the cup.
The solar still works by creating a greenhouse under the plastic. Ground water evaporates (蒸发) and collects on the sheet until small drops of water form, run down the material and fall off into the cup. When the container is full, you can suck the refreshment out through the tube, and won't have to break down the still every time you need a drink.
32. What do we know about the solar still equipment from the first paragraph?
A. It's delicate. B. It's expensive. C. It's complex. D. It's portable.
33. What does the underlined phrase“the water catcher” in paragraph 2 refer to?
A. The tube. B. The still. C. The hole. D. The cup.
34. What is the last step of constructing a working solar still?
A. Dig a hole of a certain size. B. Put the cup in place.
C. Weight the sheet's center down. D. Cover the hole with the plastic sheet.
35. When a solar still works, drops of water come into the cup from ______.
A. the plastic tube B. outside the hole
C. the open air D. beneath the sheet