职称英语等级考试理工AB模拟题
难度B／A级
Robotic Highway Cones
A University of Nebraska professor has developed robotic cones and barrels．____1____ They can even be programmed to move on their own at any particular part of me day，said Shane Farritor, an assistant professor of mechanical engineering at Nebraska．
For example，if workers arrived at 6 a.m.，the cones could move from the side of the highway to block off the lane at that time．____2____ “It just seems like a very good application for robots，”Farritor said．“The robotic cones would also help remove people from hazardous jobs on the highway putting barrels and cones into place，”Farritor said in a report on his creation．
____3____ This fund allowed Farritor to work on the project with graduate students at Nebraska and his assistant Steve Goddard．
The robots are placed at the bottom of the cones and barrels and are small enough not to greatly change the appearance of the construction aides．“It would look exactly the same，”Farritor said．“Normally there’s a kind of rubbery, black base to them．____4____”
Farritor has talked with Officials from the Nebraska Department of Roads about how the robots would be most useful to what they might need．
The robots could come in handy following a slow．moving maintenance operation，like painting a stripe on a road or moving asphalt，where now the barrels have to be picked up and moved as the operation proceeds．“That way you don’t have to block off a 10-mile strip for the operation,”Farritor said．
While prototypes have been made．they are not in use anywhere．Farritor said he has applied for a patent and is considering what to do next．____5____He is also thinking about marketing the robots to roads departments and others across the country wh07 may benefit from them．
词汇：
cone／n．圆锥体
hazadous／adj．有危险的
aide／n．辅助用具
rubbery／adj．类似橡胶的
strip／n．条，带
asphalt／n．沥青
prototype／n．原型
patentt／n．专利权
练习：
A．And they can return to the original place at the end of the day．
B．He is thinking about starting a small business．
C．Farritor was“Inventor of the Year”in 2003．
D．Work on the idea began in 2002 using a National Academy of Sciences grant．
E．We replace that with a robot．
F．These robotic cones and barrels can move out of the way，or into place，from computer commands made miles away．
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Making the Leap
Jumps play a big role in many styles of dancing．Generally, what makes a jump impressive is its hang time, the amount of time a dancer spends in the air．
The quest for greater hang time is a battle against gravity，the constant____1____pull of Earth，said Laws．To leave the ground at all。a dancer has to use leg muscles to create an upward push that is greater than Earth’s downward pull．But the final____2____of any jump depends on just one thing；the upward speed of the body just as the dancer leaves the ground．
Strengthening muscles so they can push harder is one obvious____3____to achieve higher jumps and increase hang time．But ballet dancers also use a simple trick to gain the illusion of staying in the air longer without actually doing so．
In a huge sideways jump called a grand jete, a____4____ballet dancer seems to float for an impossible length of time．Of course，a dancer can’t really hang in the air．The laws of physics decree that during any jump，a dancer’s center of gravity must follow a parabola．A parabola is the same____5____path a ball takes when you throw it into the air．So how do dancers make it look like they’re hanging in the air?
A dancer____6____the illusion of floating in the air by Lifting her legs and arms as she approaches the peak of the jump．The____7____of her body—her torso and her head—respond by sinking a bit．If her timing is just right，she’ll seem to float sideways，instead of rising and falling．The effect is not only beautiful；it____8____makes the jump seem bigger by“stretching out”the peak．
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