Question

_____ the police thought he was the most likely one, since they had no exact proof about it,they had to set him free.

A．As long as

B．If only

C．Although

D．As though

Answer 1

C

試題分析：連詞辨析。A只要；B要是…就好了；C盡管，即使；D似乎，好像；句意：盡管警察認為他是最有可能的一個，但是因為他們沒有確切的證據，他們不得不把他釋放了。故C正確。
點評：連詞的詞義辨析要放在上下文的語境中進行，要注意上下文的語義的串聯以及邏輯關系的推理，特別要注意一些連詞和時間狀語的固定搭配。