The earliest maps were probably drawn in the Middle East．Some of these maps have

（16）　　 and they show us the people at that time thought the earth flat （平的）．As time went by，the pictures became more detailed and maps were more（17）　　 made．Later on，ancient Greeks（希腊人） used their（18）　　 of math and science to make maps．Greek maps tell us the Greeks knew the world was（19）　　．

From simple pictures，mapmaking has turned into a science．Maps are made（20）　　surveying（勘测） land．In the 1900s，people around the world started to share information to make （21）　　 maps．With the help of the photographs taken from the sky and space，maps are now more exactly made than ever．（22）　　 the world is always changing，we will always need new maps．

There are many types of maps，but almost all use（23）　　 and pictures to describe what a place is like when the map is made．A map usually tells what the pictures（24）　　．Some maps may show the whole world．A road map will help you know the（25）　　 from one place to another．Other maps may use pictures to show the temperature and population in different places．

16．A．disappeared	B．survived	C．gone	D．left
17．A．slowly	B．simply	C．correctly	D．carelessly
18．A．knowledge	B．courage	C．energy	D．challenge
19．A．long	B．small	C．square	D．round
20．A．into	B．by	C．of	D．from
21．A．cleaner	B．lighter	C．better	D．older
22．A．Though	B．So	C．Unless	D．Since
23．A．sounds	B．models	C．words	D．stories
24．A．stand for	B．go for	C．ask for	D．wait for
25．A．weather	B．distance	C．feature	D．culture