某年7月11日洪水泛滥造成灾害后某地区发生大量钩端螺体病病人罹患率达53.1%从时间角度描述其分布的特征是()
A、短期波动
B、季节性
C、长期趋势
D、爆发
E、周期性
参考答案:A
下面属于吉芬商品的是:()。
A.高档住宅
B.珠宝
C.股票
D.豪华轿车
What did the woman do [A] She drove her taxi into a car park. [B] She parked her car in a taxi park. [C] She waited for a taxi for too long.