4:假设材料1和材料2的某项平均资质为x,那么合出的召唤兽的这个资质只有可能是以下21个数值之一: 0.70x,0.72x,0.74x,0.76x,0.78x,0.80x,0.82x,0.84x,0.86x,0.88x,0.90x,0.92x,0.94x,0.96x,0.98x,1.00x,1.02x,1.04x,1.06x,1.08x,1.10x