The problem is so complex that I'm afraid it will take me several hours to________．

A．put out B．set out

C．break out D．figure out

 

D

【解析】D　考查短語(yǔ)辨析。put out熄滅，生產(chǎn)；set out出發(fā)，著手；break out爆發(fā)，突然發(fā)生；figure out算出，解決。句意：這個(gè)問(wèn)題如此難，因此我認(rèn)為我不得不需要花費(fèi)幾個(gè)小時(shí)來(lái)解決它。

 

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