A.white
B.middle class people
C.tourists from other countries
D.immigrants or their descendants

A.four/three　
B.five/two
C.six/three　
D.six/two

A.Because Australia is too far away from Europe.
B.Because Australia is the least mountainous and most level of the world.s continents.
C.Because Australia is separated from the rest of the world by seas.
D.Because most of the continent is hot and dry.

A.1%
B.1.5%
C.2%
D.2.5%

A.Koalas and possums.
B.Emus and kangaroos.
C.Echidnas and platypuses.
D.Budgerigars and cockatoos.

A.oaks and elms　
B.palms and pines
C.willows and poplars　
D.eucalypts and wattles