1. What is the main difference between natural languages

and artificial languages?

a) Natural languages are spoken by humans, while artificial

languages are created by computers.

b) Natural languages are based on rules, while artificial

languages are based on symbols.

c) Natural languages are ambiguous and contextdependent, while artificial languages are precise and

unambiguous.*

d) Natural languages are learned through exposure, while

artificial languages are learned through instruction.

Rationale: Natural languages are the languages that humans

use to communicate with each other, such as English,

Chinese, or Arabic. Artificial languages are the languages

that humans create for specific purposes, such as

programming, logic, or mathematics. Natural languages

have many features that make them flexible and expressive,

but also vague and ambiguous. Artificial languages have

many features that make them clear and exact, but also

rigid and limited.

2. What is the main challenge of natural language

processing (NLP)?

a) To design algorithms that can understand and generate

natural language.*

b) To create databases that can store and retrieve natural

language data.

c) To develop standards that can regulate and evaluate