窦性P波的方向应该是（   ）

治疗心源性哮喘宜选用（    ）。

某男，48岁。体质素虚，1周前因劳累后倦怠乏力加重，遂来就诊。症见体倦乏力、食少腹胀、便溏、肛门下坠，舌淡苔白、脉弱。医师诊为脾虚气陷证，处以成药补中益气丸，药物组成为黄芪(炙)、党参、白术(炒)、甘草(炙)、当归、陈皮、升麻、柴胡、大枣、生姜。方中均能升阳举陷，为治中气下陷诸证所常用的配伍组合是（      ）

最早对国家进行系统分类的人是（      ）。

含有具光敏作用的呋喃香豆素类化合物的中药是

Passage2

     Old stereotypes diehard. Picture a video-game player and you will likely imagine a teenage boy, byhimself, compulsively hammering away at a game involving rayguns and aliensthat splatter when blasted. Ten years ago that might have borne some relationto reality. But today a gamer is as likely to be a middle-aged commuterplaying  "Angry Birds" on hersmartphone. In America, the biggest market, the average game-player is 37 yearsold. Two-fifths are female.

     Over the past tenyears the video-game industry has grown from a small business to a huge, mainstreamone. With global sales of $56 billion in 2010, it is more than twice the sizeof the recorded-music industry. Despite the downturn, it is growing by almost9% a year.

    Is this success dueto luck or skill? The answer matters, because the rest of the entertainmentindustry has tended to treat gaming as being a lucky beneficiary of broadertechnological changes. Video gaming, unlike music, film or television, had theluck to be born digital. In fact, there is plenty  for old media to learn.

    Video games have certainly been swept along bytwo forces: demography and technology. The first gaming generation-the childrenof the 1970s and early 1980s-is now over 30. Many still love gaming, and canafford to spend far more on it now. Meanwhile rapid improvements in computingpower have allowed game designers to offer experiences that are now often morecinematic than the cinema.

     But even grantedthis good fortune, the game-makers have been clever. They have reached out tonew customers with new methods. They have branched out into education,corporate training and even warfare, and have embraced digital downloads andmobile devices with enthusiasm. Though big-budget games are still popular, muchof the growth now comes from  "casual" games that are simple, cheap and playable in shortbursts on mobile phones or in web browsers.

     The industry hasexcelled in a particular area-pricing. In an era when people are disinclined topay for content on the web, games publishers were quick to develop"freemium" models, where you rely on non-paying customers to build anaudience and then extract cash only from a fanatical few.

Asgaming comes to be seen as just another medium, its tech-savvy approach could provide awelcome shot in the arm for existing media groups.

The two examples in Paragraph l are used to illustrate that_____.

患者，男性，30岁。右颞下颌关节无痛性弹响3个月，检查：开口度50mm，两侧关节开口未弹响，关节区无压痛。首选的治疗方法是（  ）

鼓励下肢静脉曲张手术患者早期活动，其主要目的是预防（     ）

受体的数量和其能结合的配体是有限的，配体达到一定浓度后，效应不再随配体浓度的增加而增加，这一属性属于受体的（   ）

12岁的王某参与打架斗殴，违反了治安管理规定，对于王某的行为，下列选项中正确的是(　　)。

某女，26岁。每至经期出现腹痛，痛势绵绵，月经色淡，量少，伴面色苍白，倦怠无力，舌淡，脉细弱。治疗除三阴交、关元、足三里外，宜选取(   )