The economy has now been growing at an average 【annual】 rate of

The economy has now been growing at an average 【annual】 rate of 4 .5 percentage points for the past six years.
A、quarterly
B、weekly
C、monthly
D、yearly
【正确答案】：D
【题目解析】：句意:在过去的六年中，经济一直以4.5%的年平均增长率增长。annual在句中的意思是“每年的”。选项中quarterly意为“按季度的”;weekly意为“每周的”；monthly意为“每月的”；yearly意为“每年的”。故本题选D。