蓄电池电解液因蒸发而不足应加入（）。C.
A、密度相同匐睥液
B、自来水
C、蒸馏水
D、洁净水
参考答案：C
ˉWhy did she spend so much time searching shop after shop for a time?
ˉ Oh, she was _____ about her clothes.
A．particular
B．curious
C．special
D．unusual
喉癌可分成声门上型、声门型、声门下型和跨声门型、其中声门下型约占喉癌病例的（）
A.5%
B.10%
C.15%
D.20%
E.25%
