The word "confrontation" in the last paragraph most probably means ______.A.opposition B.determinationC.protection D.confusion
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The book ______ well and was repri nted many times.A.sells B.is selling C.was soldD.sold
__________ [A]first [B]contrary [C]reverse [D]different
若集合M={(x,y)| 3x一2y=-l),N={(x,y)| 2x+3y=8),则M∩N=() A.(1,2) B.{1,2) C.{(1,2)} D.φ