下列哪项是胃小弯溃疡合并出血的最佳手术方案( )A．胃大部切除术 B．迷走神经干切

下图中被北方少数民族尊为“天可汗”的是[ ]

A

B

C

D

体温39℃以上，一昼夜温差大于2℃，但最低点仍高于正常水平的体温曲线类型属于（）。

A.间歇热

B.弛张热

C.稽留热

D.不规则热

E.回归热

(1) 根据结构对有机物进行分类，有助于对其性质的掌握。

①下列有机物属于芳香烃的是____________(填字母)。

预测该芳香烃____________ (填“能”或“不能”)在光照的条件下与氯气发生反应

②下列有机物属于醛类的是___________(填字母)。

(2) 化合物X的结构简式为

①X分子的核磁共振氢谱有___________个峰。

②X的一种同分异构体Z的结构简式为H₂C＝CH—CH₂OH，请写出Z与H₂在一定条件下反应的化学方程式________________________________________________。

下图是呼吸与吞咽关系示意图，据图回答

（1）填出各部分的名称

1         2          

3         4          

5       

（2）       是呼吸道和消化道共同的通道。

（3）吃饭时说话，容易造成        误入气管。

（4）如果这是一个成年人的喉部侧面图，请你猜猜，是男人还是女人，说明原因？（3分）

Many of us believe that a person’s mind becomes less active as he grows older．But this is not true，according to Dr．Lissy F．Jarvik，professor of psychiatry(精神病学)at the University of California，Los Angeles，and a board member of the New Center for Aging at the Veterans Hospital．She has studied the mental functioning of aging persons for several years.For example，one of her studies concerns 136 pairs of twins, who were first examined when they were already 60 years old．As Dr．Jarvik continued the study of the twins into their 70s and 80s，their minds did not generally decline(下降)as was expected．

However，there was some decline in their psycho-motor(精神运动的)speed． This means that it took them longer to accomplish mental tasks than it used to．But when speed was not a factor，they lost very little intellectual (智力的) ability over the years.In general，Dr．Jarvik’s studies have shown that there is no decline in knowledge or reasoning ability．This is true not only into the 30s and 40s，but into the 60s and 70s as well．

As for learning new things，and ability to remember，studies by Dr．Jarvik and others show that the old are equal to the young．It is true that older people themselves often complain that their memory is not as good as it once was．However，much of  what we call“loss of memory”is not that at a11．

In the cases where the older person’s mind really seems to decline，it is not necessarilv a sign of a decay due to becoming old or“senility”．Often it is simply a sign of a depressed emotional state．This depression usually can be got rid of by counseling(咨询)with a psychologist，or medicine which fights depression.

In American society，when an older person loses something，we tend to call him or her“senile”．But notice that when a younger person loses something，he does not blame it on senility or loss of memory．He finds some other excuse!

小题1:A long-term study of 136 pairs of twins showed that the only factor that declined over the years was  .

A．mental health

B．intellectual ability

C．the amount of knowledge

D．psycho-motor speed小题2:According to Dr．Jarvik’s studies，middle-aged and older persons should expect to     .

A．reason better

B．learn fewer new things

C．remember less

D．1ose little ability to remember小题3:The word“senility”most likely means       .

A．excellent health

B．weakness in body and mind because of old age

C．occasional forgetfulness

D．giving up one’s life小题4:Both younger and older persons should realize that          .

A．a sign of a decay due to old age or“senility’’is a common thing

B．older persons are wiser than younger ones because of different knowledge amount

C．senility or mental decay due to aging is much less common than most of us believe

D．a sign of a depressed emotional state is not a reason of decay