With the country’s population reaching 1.6 billion in the mid of this century, most of China’s rivers, including the Yellow River, .
A. is drying up
B. will be drying up
C. dry up
D. have dried up
网友回答
A. is drying up
(答案→)B. will be drying up
C. dry up
D. have dried up
解析：考察时态及语态。句意：随着本世纪中期国家的人口达到十六亿，中国大部分河流，包括长江都会干涸。Dry up弄干，河流是被弄干的对象，故用被动语态。结合句意可知描述的将来的动作，故用将来时，选B。