2019_2020学年高中英语Unit2RobotsSectionⅢLearningaboutLanguage

Section ⅢLearning about Language & Using Language
课时作业
Ⅰ.单句语法填空
1．He was appointed manager of our department，although he was junior to me.
2．My companion rang me up stating he would take a plane bound for Lhasa.
3．We all envied him his talent for art.
4．He likes to talk big as if he took (take) charge of all the state affairs.
5．In my opinion，environmental protection is a practical matter as well as a theoretical (theory) one.
6．No matter how talented (talent) you are，you should study hard.
7. It is his naughty brother who put the tortoise in the tank.
8．The millionaire will never forget the days when his family had no access to food.
9．Knowledge and learning are important if we want to be successful，but they may also limit our thinking (think)．
10．The questionnaire takes approximately fifteen minutes to complete and can be used along with the assessment (assess) interview.
Ⅱ.单句改错
1．The train was delayed as result of fog. as后加a
2．I was 5 years junior than one of my brothers and 7 years younger than the other.
第一个than→to 3．To his great surprise，the house was in a mess as if broke into. broke→broken 4．The report is based facts. based后加on
Ⅲ.阅读理解
A
(2019·全国卷Ⅰ)
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 e­spaces. At present, these technologies are still expensive, though.
Researchers from Georgia Tech say that they have come up with a low­cost 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 m ade of inexpensive, plastic­like parts.The team hopes to make it to market in the near future.
【解题导语】本文介绍了一种用智能键盘进行身份识别的技术。

1．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 e­space protection.
解析：选 D 细节理解题。

根据第一段的内容，尤其是第二句“At present, these technologies are still expensive，though.”可知，现有的生物识别技术价格昂贵。

根据第二段的第一句“Researchers from Georgia Tech say that they have come up with a low­cost device (装置) that gets around this problem：a smart keyboard.”可知，同样能够保护私人电子空间的智能键盘成本较低，故选D。

2．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.
解析：选C 推理判断题。

根据第二段的内容可知，智能键盘能够准确地测量人们打字的节奏和力度，而打字模式因人而异，因此，智能键盘通过分析用户的打字模式进行身份识别，故选C。

3．What do the researchers expect of the smart keyboard?
A．It'll be environment­friendly.
B．It'll reach consumers soon.。