什么叫沥青路面？

以下患者中排牙最困难的是（）

A.牙槽嵴呈刃状的患者

B.颌弓呈尖圆形的患者

C.颌间距离较小的患者

D.依从性较差的患者

E.开口受限的患者

小李2004 年因意外事故死亡．2007年小李的家人偶然从小李生前的房间中发现了一分保额为100 万的意外保险位，购买日期为2004年初，保险时效为1 年，于是小李的家人向保险公司索赔，则保险公司（）。

A．赔付，因为小李因意外而死

B．赔付，因为小李发生事故时在保障时效内

C．不赔，因为该保单己过了索赔时效

D．不赔因为小李的保单己失效

25岁，平时月经规则，3个月前妇科检查有小肌瘤，现停经2月余， * * 流血10天。妇科检查子宫如妊娠14周大，软，轻压痛，双侧附件区触及5cm囊性包块，壁薄活动好，无压痛。血HCG增高明显。

为确诊应首先进行的检查是（）。

A．B型超声检查

B．血清CAl25测定

C．盆腔CT

D．腹部x线摄片

E．腹腔镜检查

Some snakes eat other snakes, even poisonous ones. The poison does not do them any harm(伤害). Snakes can swallow(吞下) things that are bigger around than they themselves are. This is possible because the jawbones(腭骨) are loosely joined, and the mouth can stretch（伸展）to make room for a fat animal. The snake’s slim body stretches to make space for the animal when it is inside.

Many snakes eat birds’ eggs or frogs（青蛙）. Others eat pests（害虫）, mice and other animals that harm crops on farms. Because snakes do this valuable work, you should never kill one. It is too dangerous for you to kill a poisonous one. Leave that job to experts.

小题1: Which of the following groups of food is usually had by a snake?

A．Mice, crops, birds’ eggs.

B．Pests, frogs, some animals, plants.

C．Birds’ eggs, frogs, all animals, other snakes.

D．Mice, frogs, pests, some animals, other snakes.小题2:We should not kill a snake because       

A．it is poisonous

B．it can do something useful for man

C．it will strike you in return

D．we are not experts小题3:Snakes may do some valuable work by       

A．eating pests, mice and some harmful animals

B．doing harm to other animals

C．eating birds’ eggs and frogs

D．both A and C小题4:In writing this passage the writer mainly wants us to       

A．have a better impression(印象) about snakes

B．like snakes

C．kill snakes with the help of experts

D．regard snakes as one of man’s best friends

将数字1，2，3，4，5，6，7，8，9按任意顺序写成一排，其中相邻的3个数字组成一个三位数，共有七个三位数(如将数字1-9写成1、3、4、2、7、5、8、9、6，可组成134、342、427、275、758、589、896这七个三位数)，对这七个三位数求和，则数字1-9的每一种排列对应一个和。所求得的和中，最大的比最小的数大( )。

A．1386
B．1456
C．1526
D．1596