选择题

Australia has always been a continent with few people mainly because ________.

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

【正确答案】 D

【答案解析】

由于澳大利亚的大部分地区气候炎热、干燥，所以一直是地广人稀。