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问题 单项选择题 A1型题

一30岁男性，枪伤后，右上臂反常活动，其远端未触及动脉搏动，不能主动伸腕伸指，需立即（）

A.清创固定，修复血管

B.伤口清创，骨牵引

C.清创内固定

D.加压包扎，观察血循环

E.闭合创口，夹板外固定

答案

参考答案：C

单项选择题

Internet use appears to cause a decline in psychological well-being, according to re search at Carnegie Mellon University. Even people who spent just a few hours a week on the Internet (47) more depression and loneliness than those who logged on less frequently, the two-year study showed. And it wasn’’t that people who were already feeling (48) spent more time on the Internet, but that using the Net (49) appeared to cause the bad feelings. Researchers are puzzling over the results, which were completely (50) to their expectations. They expected that the Net would prove socially (51) than television, since the Net allows users to choose their information and to communicate with others. The fact that Internet use reduces time (52) for family and friends may account for the drop in well-being, researchers hypothesized. Faceless, bodiless "virtual" (53) may be less psychologically satisfying than actual conversation, and the relationships formed through it may be shallower. Another possibility is that (54) to the wider world via the Net makes users less satisfied with their lives. "But it’’s important to (55) this is not a bout the technology itself; it’’s about how it is used," says psychologist Christine Riley of Intel, one of the study’’s sponsors. "It really (56) to the need for considering social factors in terms of how you design applications and services for technology."WORD BANKA) communication I) badB) meaningful J) pointsC) exposureK) availableD) agrees L) repeatedlyE) efficiency M) rememberF) contraryN) experiencedG) connection O) healthierH) actually
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选择题

已知⊙O1与⊙O2的半径分别为3和4，若圆心距O1O2=1，则两圆的位置关系是（　　）

A．相交

B．相离

C．内切

D．外切
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