China sent up Shenzhou V manned Spaceship into space successfully,which shows science and technology _____ rapidly in Ch
问题描述：
China sent up Shenzhou V manned Spaceship into space successfully,which shows science and technology _____ rapidly in China.
A.have been developing B.develops
C.is developing D.has developed
为什么不选其他的 我觉得都可以呢?
science and technology在这里是不是谓语动词应该用单数?
答
表示正在发展
science and technology这是一个整体啊