单项选择题
A. associating B. contributing C. appreciating D. collecting
Ifcurrentpopulationtrendscontinueandstatesdonotimprovet...
单项选择题If current population trends continue and states do not improve the education of all racial groups, the skills of the workforce and the incomes of U.S. residents are (projected) to decline over the next two decades.()
A. fall B. define C. increase D. deliver