【TheearliestmapswereprobablydrawnintheMiddleEast．Someofthesemapshave（16）___andtheyshowusthepeopleatthattimethoughttheearthflat（平的）．Astimewentby，thepicturesbecamemoredetailedandmapsweremore（17】

　　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．standfor B．gofor C．askfor D．waitfor

　　25．A．weather B．distance C．feature D．culture．