Task 1
      1.	no close
	2.	control of an important resource
	3.	natural
	4.	the market
	5.	higher
	6.	restricting output below
	7.	can
	8.	is not
	9.	a large number of firms
	10.	are not
	11.	lack of concern
	12.	no
	13.	may be higher
	14.	Oligopoly
	15.	a few



Definition :

1.	Market power
	2.	Barrier to entry
	3.	Natural monopoly
	4.	Pure monopoly
	5.	Price discrimination
	6.	Oligopoly
	7.	Monopolistic competition
	8.	Price leadership