A. 100N,300N,500N,700N B. 150S,250S,350S,450 S C. 300S,200S,100N,400N D. 400N,500N,600N,700 NA. 10°N,30°N,50°N,70°N B. 15°S,25°S,35°S,45°S C. 30°S,20°S,10°N,40°N D. 40°N,50°N,60°N,70°N打错了