题目

If you're thinking about reaching for another biscuit to get you through the working day, think again. Eating unhealthy snacks at your desk makes you pile on almost half a stone a year, a survey has revealed. The waistlines of women suffer the most, with the average female putting on 6lb 3oz—the equivalent of a whole dress size—while men see their weight increase by 5lb 2oz. The report into our eating habits found that, on average, we eat at least two snacks a day, with 30 percent of us tucking into three or more. Women admit eating more than men, with a further 13 percent of ladi关于非洲的叙述，不正确的是（　　）A．平均高度据各洲之首，被称为“高原大陆”B．热带气候面积在各洲中最大，有“热带大陆”之称C．居民90%以上是黑种人D．世界人口增长率最高