检验砂浆防水剂材料配合比水泥与标准砂的质量比为（）。A、1：3 B、1：2 C、1:

急腹症患者诊断未明确时应禁忌（）。

A.使用抗生素

B.给予灌肠

C.补液

D.应用止痛剂

E.给予流质饮食

如何解决当前面临的“能源危机”，实现可持续发展，已是当务之急．

（1）生物能源是一种可再生的新能源，其能量是绿色植物通过 _________ 作用由太阳能转化而来的；

（2）沼气是农村推广使用的一种新能源，它的主要成分是甲烷（CH₄）．沼气发电是把沼气中的 _________ 能转化为电能：

（3）利用温差可以发电．某种新型温度计，它的工作原理如图所示．将A端置于待测的高温处，与B、C端存在温度差，电路两端就会产生电压（图中虚线框部分相当于电源），电流表会有示数显示对应的温度．电路电压与A端及B、C端的温度关系如表所示．当A端的温度为200℃，B、C端为20℃，定值电阻R=10欧，通过电流表的电流为多少毫安？

ABC股份有限公司由A、B、C三方共同出资1500万元组建。三方出资额分别占注册资本的60%、30%、10%。2005年底，经董事会讨论决定，以其600万元盈余公积中的 300万元转增注册资本。在以下转增方案中注册会计师只能认可的方案是( )。

A．A股东增资200万元，B股东增资80万元，C股东增资20万元

B．A股东增资180万元，B股东增资90万元，C股东增资30万元

C．A股东增资100万元，B股东增资100万元，C股东增资100万元

D．A股东增资120万元，B股东增资110万元，C股东增资70万元

阅读理解。

                                                                    The Best of Friends

     The evidence for harmony may not be obvious in some families. But it seems that four out of five young

people now get on with their parents, which is the opposite of the popularly held image (印象) of unhappy

teenagers locked in their room after endless family quarrels.

     An important new study into teenage attitudes surprisingly shows that their family life is more harmonious

than it has ever been in the past. "We were surprised by just how positive today's young people seen to be

about their families," said one member of the research team. "They're expected to be rebellious (叛逆的) and

selfish but actually they have other things on their minds; they want a car and material goods, and they worry

about whether school is serving them well. There's more negotiation (商议) and discussion between parents

and children, and children expect to take part in the family decision-making process. They don't want to rock

the boat."

     So it seems that this generation of parents is much more likely than parents of 30 years ago to treat their

children as friends. "My parents are happy to discuss things with me and willing to listen to me," says 17-years-

old Daniel Lazall. "I always tell them when I'm going out clubbing. As long as they know what I'm doing,

they're fine with it." Susan Crome, who is now 21, agrees. "Looking back on the last 10 years, there was a lot

of what you could call negotiation. For example, as long as I'd done all my homework, I could go out on a

Saturday night. But I think my grandparents were a lot stricter with my parents than that."

     Maybe this positive view of family life should not be unexpected. It is possible that the idea of teenagers

rebellion is not rooted in real facts. A researcher comments, "Our surprise that teenagers say they get along

well with their parents comes because of a brief period in out social history when teenagers were regarded

as different beings. But that idea of rebelling and breaking away from their parents really only happened during

that one time in the 1960s when everyone rebelled. The normal situation throughout history has been a smooth

change from helping out with the family business to taking it over."

1. What is the popular images of teenagers today?

A. They worry about school

B. They dislike living with their parents

C. They have to be locked in to avoid troubles

D. They quarrel a lot with other family members

2. The study shows that teenagers don't want to _____.

A. share family responsibility

B. cause trouble in their families

C. go boating with their family

D. make family decisions

3. Compared with parents of 30 years age, today's parents _____.

A. go to clubs more often with their children

B. are much stricter with their children

C. care less about their children's life

D. give their children more freedom

4. According to the author, teenage rebellion _____.

A. may be a false belief

B. is common nowadays

C. existed only in the 1960s

D. resulted from changes in families

5. What is the passage mainly about?

A. Negotiation in family

B. Education in family

C. Harmony in family

D. Teenage trouble in family