饮食长期缺碘为何会导致甲状腺肿？

     It is difficult for parents of nearly every family to teach their children to be responsible(有责任的)for

housework, but with one of the following suggestions, you really can get your children to help at home.

If you give your children the impression that they can never do anything quite right, then they will regard

themselves as unfit or unable persons. Unless children believe they can succeed, they will never become

totally independent.

     My daughter Mary's fifth-grade teacher made every child in her class feel special. When students

received less than a perfect test score, she would point out what they had mastered (掌握) and declared

firmly they could learn what they had missed.

     You can use the same way when you evaluate(评价)your child's work at home. Don't always scold

and you should give lots of praise instead. Talk about what he has done right, not about what he hasn't

done. If your child completes a difficult task, promise him a Sunday trip or a ball game with Dad.

     Learning is a process(过程)of trying and failing and trying and succeeding. If you teach your children

not to fear a mistake of failure, they will learn faster and achieve success at last.

1. The whole passage deals with ________.

A. social education

B. school education  

C. family education

D. pre-school education

2. The author thinks that ________.

A. there is no way to get children to help at home

B. the more encouragement and praise you give, the more responsible and helpful children will become

C. it is very difficult to make children responsible for housework

D. children can be forced to help with housework

3.  The passage gives us a good suggestion about how to evaluate your child’s work at home. That is to

________.

A. praise his success          

B. promise him a trip

C. give him a punishment      

D. promise him a ball game

4. The author advises readers to ________.

A. learn from himself, for he has a good way of teaching

B. take pride in Mary's fifth-grade teacher

C. do as what Mary's teacher did in educating children

D. follow Mary's example because she never fails in the test

5. Having read the last paragraph, we can conclude that           

A. pride goes before a fall      

B. practice makes perfect

C. no pains, no gains          

D. failure is the mother of success

女，28岁，人工流产术后20小时出现右下腹部剧痛伴呕吐就诊。体温37.3℃；脉搏96次／分，面容痛苦，下腹软，右下腹有压痛。妇科检查子宫正常大，活动不良，其右侧扪及拳头大不活动囊性肿块，近子宫处压痛明显。白细胞总数13×10／L。本例的诊断应是（）

A.右侧输卵管妊娠流产

B.右侧盆腔炎性包块

C.右侧盆腔脓肿

D.右侧卵巢囊肿蒂扭转

E.阑尾周围脓肿

设计科技人员收入的指导思想和原则。

防护水平分级概述

线管和线槽的要求？