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Actual Reading Tests with Suggested answers

IELTSMaterial.com 
Section 3
 
 
Instructions to follow 

You should spend about 20 minutes on Questions 27-40 which are based on Reading 
Passage 3 
 
Insect-inspired robots
 
A recent conference reports on developments in biorobotics
 
A.
 
A tiny insect navigates its way across featureless salt-pans. A cockroach successfully 
works out how to scramble over an obstacle. The mantis shrimp scans its aquatic world 
through hyperspectral eyes. Using the most basic of equipment and brains tinier than a 
pinhead, insects constantly solve complex problems of movement, vision and navigation 
processing data that would challenge a supercomputer. How they do it is driving one of 
the most exciting new fields of technology-biomimetics and biorobotics, the imitation of 
insect systems to control man-made machines. Delegates at a recent conference 
presented some outcomes of their work in this area.
B.
 
Dr Alex Zelinsky suggested that the method by which wasps use landmarks to find their 
way back to the nest may o
ne day be part of a system for navigating cars that ‘know’ 
where to go. A research team led by Dr Zelinsky has shown that a robot can navigate its 
way along 50 different landmarks by recognizing them individually using a panoramic 
camera. ‘The inspiration came from biology, where wasps use a practice called “turn back 
and look” to orient themselves as they emerge from their nest. By flying to and fro, they 
lock in images of the nest from different angles and perspectives, so they can recognize it 
again,’ he
explained. The robot’s panoramic camera logs the surrounding area and its key 
landmarks, which are then sorted in its computer according to how reliable they are as 


217 

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