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lat plates which act as feet. WL-6 uses 12 actuators to move forwards, backwards and sideways while carrying an adult weighing up to 60 kilograms(130 pounds). The robot can adjust its posture and walk smoothly even if the person it is carrying shifts in the chair. At present it can only step up or down a few mil1imeters, but the team plans to make it capable of dea1ing with a normal flight of stairs. "I believe this bipedal robot, which I prefer to call a two-legged walking chair rather than a wheel-chair, will eventually enable people to go up and down the stairs," said Atsuo Takanishi, from Waseda University "We have had strong robots for some time but usually they have been manipulators, they have not been geared to carrying people around," says Ron Arkin, at the Georgia Institute of Technology and robotics consultant for Sony. "But I don't know how safe and how user-friendly WL- 16 is." Tmsuk chief executive Yoichi Takamoto argues that bipedal or multi-legged robots will be more useful than so-called "caterpillar models" for moving over uneven ground. WL- 16's normal walking stride measures 30 centimeters, but it can stretch its legs to 136 cm apart. The prototype is currently radio-controlled, but the research team plans to equip it with a stick-like controller for the user in future", Takanishi said, it wi1l take "at least two years" to develop the WL- 16 prototype into a working model. Smaller, ground-hugging robots have been developed to pass across tricky terrain. One maggot-like device uses a magnetic fluid to pulse its way along", while another snake-like robot uses smart software to devise new movement strategies if the landscape takes its toll on any one part. One ball-shaped robot even uses a leap-and-bounce approach to travel over bumpy territory. But none of these are big or strong enough to carry a person too.
1What is the main idea of the last paragraph?
A.Different shapes of robots perform different functions. B.Many kinds of robots have been developed to walk over tricky terrain. C.Robots, big or small, perform almost the same function. D.None of the four kinds of robots are strong enough to carry people around.
2Which of the following description about WL-l6 is true?
A.It is a ground-hugging robot. B.It is a caterpillar model. C.It needs time to be developed into a working model. D.It is going to be radio-controlled.
3What does Ron Arkin think of WL-l6?
A.He thinks the robot is user-friendly. B.He thinks it i8 another kind of manipulator. C.He is not sure if the robot can cap people safely D.He doubts if the robot is strong enough to climb stairs.
4Which of the following about how the robot works is NOT correct?
A.The robot is battery-powered. B.The robot has two sets of poles mounted on flat plates. C.The robot uses actuators to move about. D.The robot can cap an adult of up to 60 kilograms.
5The robot that unveiled on Friday in Tokyo, Japan
A.has two legs and is able to carry a person. B.surprised visitors from Waseda University. C.enables wheel-chair users to climb up and down stairs. D.can transport heavy goods over uneven terrain. 2、Night of the Living Ants When an ant dies, other ants move the dead insect out of the nest. This behavior is interesting to scientists, who wonder how ants know for sure - and so soon-that ano
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