The changes in our chemistry lab will cost quite a lot, ____ they will save us m

The changes in our chemistry lab will cost quite a lot, ____ they will save us m

题型:不详难度:来源:
The changes in our chemistry lab will cost quite a lot, ____ they will save us money in the long run. 
A.orB.sinceC.forD.but

答案
D                       
解析
根据题意,两个分句间为转折关系。in the long run意为“最终地”。  
举一反三
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A.onceB.thenC.whileD.if

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