Official recognition that foreign technology could play a major role in modernizing the Chinese economy had caused imports to rise by more than 50％ in1978, placing undue strain on the national economy. (   )

Official recognition that foreign technology could play a major role in modernizing the Chinese economy had caused imports to rise by more than 50％ in1978, placing undue strain on the national economy. (   )

A.realization

B.knowing

C.acceptance

D.refusing

正确答案是A