题目

有一瓶14%的氢氧化钾溶液，加热蒸发掉100g水后，得到28%的氢氧化钾溶液80mL，所得溶液的浓度为   A．5mol/L          B．6mol/L       C．6.25mol/L       D．6.5mol/L 答案：C—Is the bag beautiful?—Yes, at _____ it’s _____ the one you bought for me.A．last; as bad asB．least; no better thanC．last; not betterD．least; no worse than