Which of the following statements about Australia is true?
A、It is the world’s fifth largest country and is surrounded by sea.
B、It is the smallest and the only continent that contains only one country.
C、It is a continent that contains only Australia and New Zealand.
D、It is the world’s smallest continent and the world’s fourth largest country.
【正确答案】：B
【题目解析】：本题考查澳大利亚的地理位置。根据课本P285可知，澳大利亚是最小的，也是唯一的只有一个国家的大陆。
