按照《五金交电家电化工商品的购销合同实施办法》规定，供方错发到站、中转单位、收货单位

“心扉如同门户，小小的钥匙便可打开它，别忘了钥匙有这样两把——‘谢谢’和‘劳驾’”。之所以这样说，是因为（　　　）

①用语文明能使交往和谐，为人际关系增色

②文明的语言能让人感到温暖，拉近人与人之间的距离

③和气的态度能避免竞争

④只要举止文明，就可广交朋友

A．①②　

B．③④

C．①③　　

D．②④

男性，65岁，出现心悸，心前区疼痛。该患者的诊断可能是（）

A.冠心病

B.感染性心内膜炎

C.病态窦房结综合征

D.动脉导管未闭

E.甲状腺功能亢进

小儿急性喉炎的症状有（）

A.犬吠样咳嗽

B.声音嘶哑

C.吸气性喉鸣

D.三凹征

E.呼气性呼吸困难

阅读理解

       Keeping a full social calendar may help protect you from dementia (痴呆),researchers said on

Monday.Socially active people who were not easily stressed had a 50 percent lower risk of developing

dementia compared with men and women who were isolated and prone to distress,they reported in the

journal Neurology.

      "In the past,studies have shown that chronic distress (长期抑郁) can affect parts of the brain,possibly

leading to dementia," HuiXin Wang of the Karolinska Institute in Sweden,who led the study,said in a

statement."But our findings suggest that having a calm and outgoing personality in combination with a

socially active lifestyle may decrease the risk of developing dementia even further."

       An estimated 24 million people worldwide have memory loss,problems with direction and other

symptoms that signal Alzheimer's disease and other forms of dementia.Researchers believe the number of

people with dementia may quadruple (变为四倍) by 2050,underlining the importance of better

understanding the condition.

       The Swedish study involved 506 elderly people who did not have dementia when first examined.The

volunteers were given questionnaires about their personality traits and lifestyles and then tracked for six

years.Over that time,144 people developed dementia with more socially active and less stressed men and women 50 percent less likely to be diagnosed with the condition.

     "The good news is,lifestyle factors can be modified as opposed to genetic factors which cannot be

controlled," Wang said."But these are early results,so how exactly mental attitude influences risk for

dementia is not clear."

1．Study suggests that________.

A．women have a 50 percent lower risk of developing dementia than men

B．50 percent of elderly people have the risk of developing dementia

C．people with active lifestyles will never develop dementia

D．going to a party will cut the risk of developing dementia

2．________people are believed to develop dementia in one year on average in the future 40 years.

A．About 1.8 million 

B．About 24 million

C．About 72 million 

D．About 96 million

3．It can be inferred that________could be a good way to decrease the risk of developing dementia.

A．living alone in a deserted island

B．modifying genetic factors

C．changing lifestyles

D．getting away from activities

4．Which of the following is TRUE according to the passage?

A．It is not clear whether mental attitude influences the risk of developing dementia.

B．The people involved in the Swedish study are never diagnosed with dementia.

C．Memory loss,direction confusion could be the symptoms of dementia.

D．The number of people with calm and outgoing personality is growing.

下列中何项不属于房事养生的运用原则（）

A.禁欲或纵欲

B.注意房事卫生

C.遵守房事禁忌

D.杜绝性生活混乱