By "infrastructure"(Para. 2) the author means_____.
A.buildings B.the basic framework of a country, such as schools, services, etc. C.social demands D.services and production正确答案B
By "infrastructure"(Para. 2) the author means_____.
A.buildings B.the basic framework of a country, such as schools, services, etc. C.social demands D.services and production正确答案B
