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[填空题]VlbraUng Rubber CeHphones
Vibrating mbber ceUphones COIlld be the next big thing in mobile communications．They alloww people to press the phone l：0 Iransmit Vibrations aJong with their_____(5 1)words．According t0 a research team at the MIT Media Lab in Cambridge，Massachusetts，the idea will make_____(52)more fun．Many mobile phones call already Vibrate instead of ringing_____(53)you d0 not want people t0 know you are getting a call．But these_____(54)are t00 simple for subtle(敏感的)communication．_____(55)Angela Chang 0f the lab’s Tangible Media Group．“They’re either on or off，”she savs．But when you hold Chang’s mbber ceHphone，your 6ngers and thumb wl’ap around five_____(56)speakers．They Vibrate_____(57)your skin around 250 times per second．Beneath these speakers sit pressure sensors(传感器)，so you can transmit vibration as weu as_____(58)it．when vou squeezewith a finger，a Vibration signal is transmitted_____(59)your caller，s corresponding finger，its speed_____(60)on hOW hard you squeez
A. A．phoning
B．touching
C．working
D．asking
[单项选择]
The Development of Rubber
Here is the story of rubber. From the earliest time it was common knowledge (51) the Peruvians that when a cut was made in the outside skin of a rubber tree, a white liquid (52) milk came out, and that (53) this a sticky (粘的) mass of rubber might be made. This rubber is soft when warm, so that it is possible to give it any (54) . The Peruvians made the (55) that it was very good for keeping out the wet. Then in the early 1800’s, the Americans made use of it for the first time. First they made overshoes to (56) their feet dry. Then came a certain Mr. Mackintosh, who made coats of cloth covered with natural rubber. From that day to this we have been coating cloth with rubber as Mr. Mackintosh (57) , and our raincoats are still named after him.
But these first rubber overshoes and raincoats were all soft and sticky in summer, and
A. or
B. however
C. though
D. even
