问题
选择题
(2011·北京高考)The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase________.
A．them
B．those
C．it
D．that
答案
答案：C
选C 考查代词。根据句意“由于地方政府的努力，大城市的就业率在上升” 可知应用it 指代the employment rate。