在网状型数据库中，系主和成员之间的联系是( )的联系。 A．一对一 B．多对一

与更衣丸长期同服可导致药源性肠炎的是（）

A.川贝枇杷露

B.利胆排石片

C.牛黄降压片

D.天王补心丹

E.治癫灵片

有一老人被人打后，入院检查中，出现口唇发绀，四肢凉，血压下降而死亡，其死亡原因最可能是下列哪一项

A．心肌梗死

B．脑出血

C．动脉瘤破裂

D．肺动脉栓塞

E．心力衰竭

一束单色光由空气入射到某平板玻璃表面，入射光及折射光光路如图所示。求该单色光在玻璃中的临界角。

My Space and other Web sites have unleashed a potent new phenomenon of social networking in cyberspace, (1) at the same time, a growing body of evidence is suggesting that traditional social (2) play a surprisingly powerful and under-recognized role in influencing how people behave.

The latest research comes from Dr. Nicholas A. Christakis, at the Harvard Medical School, and Dr. James H. Fowler, at the University of California at San Diego. The (3) reported last summer that obesity appeared to (4) from one person to another (5) social networks, almost like a virus or a fad. In a follow-up to that provocative research, the team has produced (6) findings about another major health (7) : smoking. In a study published last week in the New England Journal of Medicine, the team found that a person’s decision to (8) the habit is ply affected by (9) other people in their social network quit—even people they do not know. And, surprisingly, entire networks of smokers appear to quit virtually (10)

For (11) of their studies, they (12) of detailed records kept between 1971 and 2003 about 5,124 people who participated in the landmark Framingham Heart Study. Because many of the subjects had ties to the Boston suburb of Framingham, Mass. , many of the participants were (13) somehow—through spouses, neighbors, friends, co-workers—enabling the researchers to study a network that (14) 12,067 people.

Taken together, these studies are (15) a growing recognition that many behaviors are (16) by social networks in (17) that have not been fully understood. And (18) may be possible, the researchers say, to harness the power of these networks for many (19) , such as encouraging safe sex, getting more people to exercise or even (20) crime.

6（）

A.consequent

B.controversial

C.similar

D.diffident

法洛四联征的基本畸形不包括（）

A.肺动脉狭窄

B.主动脉骑跨

C.室间隔缺损

D.右心室肥厚

E.左心室增大