洗胃的目的是( )A．清除胃内毒物 B．将胃内滞留食物洗出 C．减轻胃黏膜水肿 D

对话填空.

Alan: You haven't been around much lately, have you?

Brice: No, I've been a_ 1 on vacation.

Alan: Oh? Where were you?

Brice: Palm Springs, I've got a cousin there. From him I know many teenager f__2__and the

          most important people in their lives are their friends. They believe that their family members,

           e__3__their parents, don't know them as well as their friends do. In large families, it

           is often for brothers and sisters to f___4__with each other and then they can only go

           to their friends for advice.

Alan:It is very__5__for teenagers to have one good friend or many friends__6__when they

               are not with their friends, they usually spend a lot of time talking a 7__ themselves

              on the phone. This__8__is very important in children's g__9__up, because friends

               can d__10__something difficult to say to their family members.

Brice: I agree with you.

1 _____2_____ 3 _____4 _____5____6 _____7_____8_____9____ 10______

下列物质的变化属于化学性质的是（　　）

A．红磷可以点燃

B．浓盐酸的挥发

C．氢氧化钠的潮解

D．石蜡的熔化

某股份有限公司2005年4月1日，以1473万元的价款购入面值为1500万元的债券进行长期投资。该债券系当年1月1日发行，票面年利率为6%，期限为3年，到期一次还本付息。为购买该债券，另发生相关税费共计6.75万元(假定未达到重要性要求)。该债券折价采用直线法摊销。该债券投资当年应确认的投资收益为( )万元。

A．73.02

B．81

C．47.25

D．74.25

引起急性胰腺炎的病因我国以_________为常见，西方国家则以___________多见。

拔除下颌第一磨牙需要麻醉的神经为（）。

A.下齿糟神经

B.下齿糟神经及舌神经

C.下齿糟神经、舌神经、颊神经

D.局部浸润

E.下颌神经、舌神经、颊长神经