问题 单项选择题

某市开展分析高血压与冠心病的关系研究,对市内所有医院的冠心病患者的诊断进行了复查,最后被确定为冠心痛患者共500例,随机选取其中的200名调查既往高血压史,并从附近地区选400名对照同时进行调查,使对照在年龄上与病例相似。

根据上述资料

A.可以计算该市冠心病的发病率

B.可以计算对照人群冠心病的发病率

C.可以计算该市和对照人群冠心病的发病率

D.不能计算该市冠心病的发病率

E.不能计算该市和对照人群冠心病的发病率

答案

参考答案:A

解析:[解题思路] 本项研究为病例对照研究,在选择对照组时采用了匹配方式,因此属于匹配的病例对照研究。由于病例是该市所有医院冠心病患者的一个随机样本,因此,可以计算该市冠心病的发病率。
[命题规律] 考察“病例对照研究”。重点掌握。

阅读理解

Women consistently lie on social networking sites such as Facebook or Twitter to make their lives appear more exciting, a survey has found. The survey was asked to carried out by Pencourage, a new anonymous(匿名的)"diary-style" social media website.  

Researchers found that at least one in four women exaggerated or twisted what they are doing on social media once a month. The survey of 2000 women found they mostly pretended to be out on the town, when in fact they are home alone, and beautify about an exotic holiday or their job.

The most common reasons for women to write " fibs" included worrying their lives would seem “ boring", jealousy at seeing other people's more exciting posts and wanting to impress their friends and acquaintances.

Psychologists suggested that as people attempt to stay connected on social media, they can in fact be left more isolated. They also said that the more we try to make our lives seem perfect, the less perfect we feel. According to the OnePoll survey, one third of women surveyed admitted to dishonesty on social media sites such as Facebook and Twitter at some stage. Almost one in four admitted to lying or exaggerating about key aspects of their life online between one and three times a month while almost one in 10 said they lied more than once a week. Nearly 30 percent of women lied about "doing something when I am home alone", almost a quarter overstated their alcohol consumption while one in five were not truthful about their holiday activities or their jobs. Almost one in five women even lied about their "relationship status".

"We work very hard presenting ourselves to the world online, pretending and attempting to be happy all the time which is exhausting and ultimately unfulfilling," said Dr Michael Sinclair, a leading British consultant psychologist. "Leaving out the less desirable imperfections of our lives from the conversations with our 'friends online leads to less opportunity to feel empathized(有同感的)with, resulting in a greater sense of disconnection from others. "

小题1:According to the passage, women tend to lie on social networking sites because        .

A.they have little fun in their daily lives

B.they are not satisfied with their present life

C.they want to entertain their friends and acquaintances

D.they don't want to go out and communicate with others小题2:Which of the following words can best replace the underlined word in para. 3 ?

A.lies.

B.posts.

C.diaries.

D.impressions.小题3:In the view of psychologists, people who attempt to stay connected on social media will

eventually     .

A.feel better about their life

B.become a regular liar in the future

C.get more isolated in life

D.drink more alcohol in their daily life小题4:In Dr Michael Sinclair's opinion,     .

A.we don't have to feel empathized with our "friends" online

B.we cannot get satisfaction by lying on social networking sites

C.it is worthwhile to work hard presenting ourselves to the world online

D.the imperfections of our lives result in a sense of disconnection from others

单项选择题