肾小球滤过率是指 A．单位时间内一侧肾脏生成的终尿量 B．单位时间内两侧肾脏生成的终

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Dear Abby,

This is my first letter to you, although I have been reading your column for many years. I need an outside opinion.

I am a grandmother in my 70s and have just returned from visiting my daughter, her husband and their three dearly loved children--all under the age of 5--and I'm upset with some of their parenting ways.

For example: They lock the doors to their children's bedrooms at night because the children might get out of their beds and wander around the house, and we may not hear them."

If one child should get punishment, all three are punished, and if one child says a naughty

word, all three are given hot sauce (辣酱汁) in the mouth. I know these parents love their children very much, but are these ways of disciplining them wise? Please understand, it is not my aim to interfere (干涉).

--- Gram

Dear Gram,

Children's bedroom doors should not be locked. Should a flash fire break out, it would be a nightmare (噩梦).Punishing all the children when only one has earned the punishment is a good way to make them grow up to hate each other. Children who use "naughty" words should not be punished with hot sauce in the mouth-they should be taught the proper and acceptable word to use instead of the "naughty" word. 

---  Abby

49. Gram's daughter _____________.

A. is very strict with her children            B. does not love her three children

C. always punishes her children at night      D. often gives her children hot sauce

50. The passage doesn't say so, but from the lines you'll find that __________.

A. Gram likes writing letters               B. Gram likes watching children

C. Gram likes reading newspapers          D. Gram likes visiting her daughter

51. Gram writes the letter in order to ____________.

A. disclose her daughter's ways as a mother        

B. criticize her daughter's ways as a mother

C. express her anger about her daughter s ways as a mom

D. get others' opinion about her daughter's ways as a mom

52. Which of the following is NOT true according to the passage?

A. Gram seems to care for her grand children very much.

B. Gram is against some of her daughter's ways as a mom.

C. Abby is for only one of Gram's daughter's ways as a mom.

D. Abby agrees with Gram about her daughter's ways as a mom.

患者黄疸，全身乏力。超声所见：肝脏右叶萎缩，左叶代偿性增大，肝包膜不光滑，肝实质回声增强、增粗、欠均匀，肝静脉细窄，胆囊壁增厚约5mm，胆囊腔内可见3×4mm等回声赘生物，与前壁相连，脾脏厚径47mm。此时，可能的诊断是（）。

A.慢性胰腺炎

B.肝硬化

C.脾大

D.胆囊息肉

E.慢性胆囊炎

直接电位法中，若电位测定误差为1mV，则测定F^-离子浓度的相对误差（）

A.随浓度的增大而增大

B.约为1／59

C.无法知道

D.约为4%

当事人协议离婚时，离婚协议书中一般不包括（）。

A.自愿离婚的意思表示

B.未成年子女的今后抚养问题

C.财产分割与债务承担

D.离婚过错赔偿方法

如何预防宝宝缺铁？