___ forms the essence of theAustralia Outback.
A. The Northern Territory
B. WesternAustralia
C. SouthAustralia
D. Queensland
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The corals of the Great Barrier Reef fringe the coastline of ___ for more than 2000 kilometers.
A. SouthAustralia
B. WesternAustralia
C. Queensland
D. Tasmania
Torres Strait Islanders live on ___
A. mainlandAustralia
B. Tasmania
C. the islands between the tip of Queensland and Papua New Guinea
D. the coral islands of the Great Barrier Reef
Australian aborgines held a traditional belief that the land they lived on was created during ___
A. Golden Age
B. Genesis
C. Dreamtime
D. Five Suns
电阻:R1:R2=2:3,将它们串联在电路中,它们两端的电压之比是____,电流之比是____,若将它们并联在电路中,它们两端的电压之比是____,电流之比是____。