It’s easy to _____ this math problem.
A. work out       B. find out        C. look out
A
詞義辨析。work out計(jì)算出；find out  發(fā)現(xiàn)，查明；look out
向外看，小心。句意：算出這道數(shù)學(xué)題很容易。所以選A。
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