从纬度位置分析,世界人口稠密的地区主要分布在( )
A:低纬度地区
B:中纬度地区
C:中低纬度地区
D:高纬度地区
当前,我国正在建设社会主义和谐社会,加强社会建设的重点是( )
—I think it's really necessary. It is reported that the food that Chinese people _____ every year is enough to feed 200 million people for a year.
生物体内葡萄糖分解代谢过程的图解如下:据上图可知,下列有关说法正确的是( )