we are closely united, we can surely overe these difficulties.
A. As long as
B. As far as
C. If only
D. As good as
网友回答
(答案→)A. As long as
B. As far as
C. If only
D. As good as
解析：考查连接词用法。句意：只要我们紧密团结起来，就能克服这些困难。此处为表示条件的状语。A项“只要”符合句意；B项“远至--”；C项“要是---的话”；D项“和—一样好，实际上等于”。