A:溶洞中的流水是硬水
B:取适量溶洞中的流水,加肥皂水时会出现较多浮渣
C:溶洞中的流水可作为优质饮用水
D:溶洞中的流水不宜直接洗衣服
My brother is old enough to dress ____ now.
A. herself B. himself C. myself