I think it’s better to give it a second

问题选择题

I think it’s better to give it a second thought so many of us consider it a risk．

A．as

B．before

C．although

D．once

答案

题目分析：考查连词。A．as 因为；B．before在。。之前；C．although虽然；D．once一旦；句意：因为这么多人认为这是件危险的事，我认为最好三思。两个句子之间是因果关系，所以选A项。

考点 : 考查连词