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---Lucy, is maths difficult to learn in a foreign school?
---I’m not sure, but no subject can be learned well __________hard work.
A．withoutB．throughC．byD．with
A

試題分析：句意：Lucy，國外學(xué)習(xí)的數(shù)學(xué)難學(xué)嗎？我不確定，但是不努力學(xué)習(xí)的話沒有哪個學(xué)科能學(xué)好。A 沒有；B 通過；C 通過；D 有；結(jié)合語境故選A。
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