In 1996,Australia’s population is about 18 million or about ____

In 1996,Australia’s population is about 18 million or about ______ people to the square kilometer.
A、two
B、three
C、four
D、five
【正确答案】:A
【题目解析】:1996年,澳大利亚人口大约是1800万, 即每平方公里两个人。