在下列反应中:A.2F2+2H2O=4HF+O2B.2Na+2H2O=2NaOH

题型:填空题

问题:

在下列反应中:A.2F2+2H2O=4HF+O2      B.2Na+2H2O=2NaOH+H2

C.CaO+H2O=Ca(OH)2      D.2H2O

 电解 
.
 
2H2↑+O2

水只作氧化剂的是______,水只作还原剂的是______,水既作氧化剂又作还原剂的是______,水既不作氧化剂又不作还原剂的是______.

考点:氧化还原反应的本质和特征氧化还原反应的定义
题型:填空题

男性,23岁,跑步时不慎跌伤,左肘部先着地。体格检查:T36.5℃,P120/min,R26/min,BP90/60mmHg,神志尚清,痛苦貌,头偏向左侧。左锁骨皮下可触及骨擦音、骨擦感。X线检查示左锁骨粉碎性骨折。

锁骨骨折最常发生的部位为()。

A.锁骨内1/3处

B.锁骨中1/3处

C.锁骨远端

D.锁骨中1/3及中外1/3交界处

E.以上都不对

题型:填空题

下列各组物质,前者是混合物,后者是纯净物的是(  )

A.淀粉与氯化氢

B.钢与浓硫酸

C.纯碱与汽油

D.胆矾与液氯

题型:填空题

“A child in the street is a child that has been exposed(暴露)to a lot of bad things. And this child has no love at all. This child has no respect(尊重)for himself or herself. He sees everybody as an enemy, and he can’t trust anyone.”

Who is Moses Zulu talking about? Are there even people who live like that? Sadly, in truth, there are. They happen to be the Zambian children that Moses Zulu helps to improve their lives. Zulu does his best to give many children the hope to live even though they might have AIDS. Without his continuous work through his organization called Children’s Town, many Zambian children would have been forced to survive(生存)in an African city by getting a job as a street vendor(街头小贩), or hurting other people.

In 1990, Moses Zulu founded Children’s Town in Zambia, where one million children have no parents, largely because of AIDS. Children’s Town teaches children the basic life skills needed for their future. Each child goes through a five-year training program where they’re taught responsibility(责任), values, and self-care. Zulu’s Children’s Town provides hope for less fortunate children.

As we all know, a hero is any person who is respected for their qualities and achievements. There are not many people who are willing to help others in need. Zulu’s contribution to today’s modern society teaches us to lend a helping hand to others who are not as lucky as we are. He teaches us to make a difference in the world by helping others.

And from now on, if ever you throw away your banana just because it looks bad, well, remember that a group of people suffering from AIDS, homelessness, or other causes, would fight each other just to get their hands on a single bad banana.

68. 小题1: Which of the following CANNOT describe Moses Zulu according to the passage?

A.Devoted

B.Easy-going

C.Determined

D.Kind-hearted69. 小题2:In Children’s Town, children will learn ______.

A.how to fight against AIDS

B.how to get a job as a street vendor

C.how to survive by themselves

D.how to avoid fighting in the street70. 小题3:In the opinion of the author, he considers Moses Zulu ______.

A.a teacher

B.a doctor

C.a hero

D.a fighter71. 小题4: In the last paragraph, the author advises us to ______.

A.plant more bananas

B.make use of bad food

C.invent medicine for AIDS

D.help poor people

题型:填空题

以下不属于新生儿期护理要点的是

A.保暖

B.合理喂养

C.供氧

D.预防感染

E.测量体重

题型:填空题

软水系统工作压力由膨胀罐内的()压力控制.

A、空气

B、氮气

C、软水

D、水泵

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