PDF《2019 年普通高等学校招生全国统一考试（全国卷 I）》

I don'

t know,but I want to know.'

Whaley got the idea of this second-grade presidential campaign project when he asked the children one day to raise their hands if they thought they could never be a president. The answer broke his heart. Whaley says the project is about more than just learning to read and speak in public. He wants these kids to learn to boast(夸耀) about themselves. Boasting about yourself,and your best qualities, Whaley says, is very difficult for a child who came into the classroom not feeling confident. 24. What made Chris nervous? A. Telling a story. B. Making a speech. C. Taking a test. D. Answering a question. 25. What does the underlined word stumbles in paragraph

2 refer to? A. Improper pauses. B. Bad manners. C. Spelling mistakes. D. Silly jokes. 26. We can infer that the purpose of Whaley'

s project is to A. help students see their own strengths B. assess students'

public speaking skills C. prepare students for their future jobs D. inspire students'

love for politics 27. Which of the following best describes Whaley as a teacher? A. Humorous. B. Ambitious. C. Caring. D. Demanding. C 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

6 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 ........