用盐酸滴定液滴定碳酸钠时，Na2CO3与HCl的摩尔比
A．金属指示剂B．吸附指示剂C．酸碱指示剂D．自身指示终点法E．永停指示终点法
参考答案：B
男，30岁，洗澡中无意发现左侧前臂皮下2枚结节，无压痛，活动好，黄豆大小。为确定诊断应做哪项检查（）
A.血嗜酸性粒细胞计数
B.囊虫皮试
C.活体组织学检查
D.脑CT
E.以上都不是
33．It has escaped me we stopped in the last class．Tom，would you tell me so that I
can go on with my lecture?
A．where it was that
B．that it was when
C．that what it was
D．how it was that
