A new keyboard can tell whether you are its owner. The keyboard records information about the typing pattern（模式）and sends it to a computer program. The program then checks to see if the pattern matches the right user. If not, an alarm sounds, and the computer locks the typist out. It locks out everyone else, even if the person knows the password. What's more, this equipment needs no batteries. It collects all the energy it needs from your actions of typing. Besides, the keyboard is also self-cleaning and the keys are free of damage from water, oil and dirt.
The keys of the new keyboard are made of the same inexpensive plastic that might be found on any other standard keyboard. But instead of being smooth, the keys have millions of tiny plastic nanowires（纳米线）on their surface area, increasing the effective contact areas between the plastics and fingers. This guarantees that there's enough power to run the keyboard as someone types.
Liming Dai, a scientist, did not work on the new keyboard, but he thinks the design could be important in getting better performance from a variety of equipment. "It could also be applied to a touch screen, for example, "Dai says. " Then smart phones and notepads could collect energy from someone's actions of typing or drawing. "
"Future work might make the keyboard even more useful, "Dai adds. " A later design might build tiny capacitors onto the nanowires, "he suggests. Capacitors are little devices that temporarily store electric charge. Those might then be LEDs to light a keyboard in the dark.
Zhonglin Wang is a co-designer of the new keyboard. His team has built a working model of the keyboard. "If a company decides to fund（资助）its production, this keyboard could be in stores in as few as two years, "says Wang.
101．How does the new keyboard tell whether you are its owner？
A．By matching the typing pattern to the right user.
B．By sending alarms to a computer program.
C．By checking the right user's passwords.
D．By just recording information about the typing pattern.
102．Why are there many nanowires on the surfaces of the keys？
A．To keep the keyboard free of damage.
B．To improve the speed of typing.
C．To make the keys smooth.
D．To help produce power.
103．What's Dai's attitude to the new keyboard？
A．Unconcerned. B．Doubtful.
C．Positive. D．Critical.
104．What is the best title for the text？
A．A New Keyboard Made of Nanowires
B．A New Keyboard Entirely Owned by You
C．A New Keyboard's Future
D．A New Keyboard Powered by Typing
101．A
102．D
103．C
104．B
【分析】
本文是一篇说明文，介绍了一款新型的键盘。这种键盘通过将输入模式与正确的用户进行匹配来识别它的主人。
101．细节理解题。根据第一段中的"The program then checks to see if the pattern matches the right user"可知，这种新型的键盘通过将输入模式与正确的用户进行匹配，来识别它的主人，故选A。
102．细节理解题。根据第二段中的" But instead of being smooth, the keys have millions of tiny plastic …as someone types. "可知，键盘表面有数以百万计的微小的塑料纳米线,增加了塑料和手指之间的有效接触区域，保证了人在打字时有足够的能量运行键盘。这说明这些纳米线是帮助产生能量的，故选D。
103．推理判断题。根据第三段中的"Liming Dai，a scientist，did not work on the new keyboard，but he thinks the design could be important in getting better performance from a variety of equipment"可知Dai认为这种设计对于提高各种设备的性能很重要。由此推知，Dai对这个新型键盘持积极态度，故选C。
104．主旨大意题。本文为读者介绍了一款新型的键盘，这种新型的键盘通过将输入模式与正确的用户进行匹配来识别它的主人，所以这篇文章最好的题目是一款完全属于你的键盘，故选B。
