This is ________ useful book. Let's buy it.
A：a
B：an
C：any
D：/
The population of Shanghai _______ than _______ Ji'nan.
中考第一天，妈妈为小明设计了一份午餐食谱：米饭、红烧鱼、小炒黄牛肉、紫菜蛋花汤．你认为添加下列哪项会使这份食谱营养搭配更合理（ ）
