N1 Read these definitions and complete the extracts with the appropriate words: Androids are anthropomorphic robots designed to look and behave like a human being. Most android can walk,
talk and understand human speech. Some react to gestures and voice inflection. Some ‘learn’ from the
environment: they store information and adapt their behavior according to a previous experience.
Expert systems is the term given to computer software that mimics human reasoning, by using a set of rules to
analyze data and reach conclusions. Some of them help doctors diagnose illnesses based of symptoms.
Neural networks are a new concept in computer programming, designed to replicate the human ability to
handle ambiguity by learning from trial and error. They use silicon neurons to imitate the functions of brain
cells and usually involve a great number of processors working at the same time.

The term (1) …………….. Is defined as the automation of intelligent behavior, but can (2) …. really be intelligent?
(3) ……..are made of units that resemble neurons. They are often used to simulate brain activity and are
effective at predicting events. (4)………..…. , also known as knowledge-based systems, mirror the structure of
an expert’s thought.