A great deal has been done to remedy the s
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A great deal has been done to remedy the situation.
A:maintain B:assess C:protect D:improve
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答案：D
本题考查的是对动词的认知。这句话的意思是：要做很多工作才能对这种情形进行补救。remedy的意思是补救。A.maintain保持；B.assess评估；C.protect保护；D.improve改进。remedy和improve意思最接近，所以选D。