The Premier says that bilateral relations will grow smoothly and steadily both countries follow the principle contained in the joint documents.
A. as far as
B. though
C. unless
D. as long as
网友回答
A. as far as
B. though
C. unless
(答案→)D. as long as
解析：考查连词辨析。A据…；就…；B尽管；C除非…；如果…不…;D只要；句意：总理说只要两国按照联合公告的原则办事，那么双边的关系就更顺利稳定地发展。根据句意说明D正确。这是一个表示条件的从句。