ChinasentupShenzhouVmannedSpaceshipintospacesuccessfully,whichshowsscienceandtechnology_____rapidlyinChina.
A.havebeendevelopingB.develops
C.isdevelopingD.hasdeveloped
为什么不选其他的我觉得都可以呢?
scienceandtechnology在这里是不是谓语动词应该用单数?