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问题 多项选择题

下列符合亚急性甲状腺炎的有（）

A.男、女发病率相当

B.HLA组型不同，临床表现相似

C.自身免疫现象对本病来说是非特异的

D.可表现为耳痛、失音

E.碘摄入相对较低地区短暂甲状腺功能减退症的发生率较低

答案

参考答案：C, D

改错题

短文改错（共10小题；每小题1分，满分10分）

1. 请按标准格式改错，每处错误及其修改均限一词。

2. 只允许修改10处，多者（从第11处起）不计分。

Though great progress has made in science these years, there

are still many people lived in poor conditions. They make their living

by collecting and selling used thing. Their children cannot go to school

because they have no enough money to send their children to there.

Why you think so many people still suffer from poverty now?

The answer lies on the population explosion. A president of a developing

country once said: “It is us who are to blame for the poverty because we used to

produce child without limit.” Although these few words sound simple enough,

but they have clear pointed out one of the causes of the population explosion.
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单项选择题

下面（）是错误的：

A.标准误大，说明用样本均数代表总体均数可靠性大

B.标准误小，说明用样本均数代表总体均数可靠性大

C.标准差大，标准误也大

D.样本含量大，标准误则小

E.标准误常用来估计总计均数可信区间
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