硬脂酸的作用。

男性，33岁。近5年来反复出现上腹部疼痛，尤以饱餐后明显。今日突然出现右上腹剧痛，5小时后来院就诊。检查：T37．3℃，P100次/分，R16次/分，BPl20/80mmHg。腹平，腹式呼吸消失。全腹压痛、反跳痛，腹肌紧张明显。肝浊音界未叩出。肠鸣音弱。

应立即采取的治疗措施是（）

A.留置胃管，持续胃肠减压

B.胃大部切除术

C.穿孔修补，高选择性迷走神经切断术

D.积极术前准备

E.抗感染、补液

F.全胃切除术

根据句意及首字母提示或用括号中所给词的适当形式完成单词。

小题1:Peng Liyuan is one of my favorite s           .

小题2:I got up late this morning. So I didn’t have a           to eat.

小题3:She g        some flowers in front of her house yesterday.

小题4:I’m very t        . Let’s have a good rest.

小题5:As a guide, I like to tell my v        about the history of our beautiful city.

电力系统振荡时，接地故障点的零序电流将随振荡角的变化而变化。当两侧电势角差δ摆升到180°时，电流最大；故障点越靠近振荡中心，零序电流变化幅度越大。

When it comes to social behaviour，mammals are in a league of their own.Some birds may form pairs，or even cooperate to hunt，but the complexity (复杂性) of their relationships can hardly compare to those within a school of dolphins，a herd of elephants or a group of humans.What makes mammalian social groups different from a flock of starlings or a shoal of fish，is that in many cases the individuals could recognize each other.Although we may think that  all elephants look pretty much the same，we can easily tell individuals of our own species apart and it has become clear through studies that the same is true of other species.Dolphins have their own signature whistles that act like “names”，and elephants can recognize and greet other individuals they have known but not seen for many years.This is something that only a few species of birds appear to be able to do.

Mammals in complex social groups not only recognize each other as individuals，but also they remember a lot of information about that individual.Social groups often rely on this memory—such as knowing who is dominant to whom，who is related to whom，and who has done what to whom in the past.It’s like remembering who you have lent money to or done a favour for，and who hasn’t repaid that money or has talked about you behind your back.You have to learn who to trust，who your friends are，and who to watch out for.

All this remembering goes on in a particular part of the brain called the neocortex (大脑皮层)．If you compare the size of a mammal’s social group with the size of this part of the brain，you will find they are remarkably closely related.This area seems to take a long time to develop fully and animals in which it is very large take a very  long time to grow up to adulthood.During this time，the youngster has to learn all the rules of social behaviour in their group and to piece together all  the relationships between the group members：Knowledge that will be needed to avoid getting into trouble.

小题1:What is special about a mammalian social group according to the passage?

A．All the individuals cooperate to hunt.

B．The individuals can communicate with each other.

C．The individuals can recognize each other.

D．The individuals form closer relationship.小题2:The passage suggests that elephants________.

A．are cleverer than dolphins

B．can recognize other species

C．may mistake a member for another

D．have good memories小题3:Animals whose area of the neocortex is large________.

A．will have a long period of time before they become adults

B．will spend a shorter time learning the necessary knowledge

C．will learn the necessary knowledge much more easily

D．will have more difficulty in growing up as adults小题4:If the neocortex is larger，the animals________.

A．can live a longer life

B．have a smaller social group

C．have a larger social group

D．have a greater body size

金山