2019年mpacc考试英语真题——连词627

{01___ you know the rules of swimming, you will be able to swim well.

A.Before

B.While

C.Though

D.Once

解析：连词Once引起条件状语从句，本句意思是:一旦你了解游泳的规则,你就会能游得很好了。
本题选D。
{02}_____we are closely united, we can surely overcome these difficulties.

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”。
本题选A。