试题与答案

The changes in our chemistry lab will co

题型:选择题

题目:

The changes in our chemistry lab will cost quite a lot, ____ they will save us money in the long run. 

A.or

B.since

C.for

D.but

答案:

D                       

根据题意,两个分句间为转折关系。in the long run意为“最终地”。  

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