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问题 单项选择题 A型题

关于2：1房室传导阻滞的分析，不正确的是（）。

A.2：1阻滞既可能是二度Ⅱ型房室传导阻滞，也可能是二度Ⅰ型房室传导阻滞

B.2：1阻滞一定是二度Ⅱ型房室传导阻滞

C.若记录到3：2阻滞，而PR间期恒定，则2：1阻滞为二度Ⅱ型房室传导阻滞

D.静注阿托品后，变为3：1、4：1下传，则为二度Ⅱ型房室传导阻滞

E.静注阿托品后，变为3：2下传，PR间期逐渐延长，则为二度Ⅰ型房室传导阻滞

答案

参考答案：B

解析：2：1阻滞既可能是二度Ⅱ型房室传导阻滞，也可能是二度Ⅰ型房室传导阻滞。可用以下方法加以鉴别：若另外记录到3：2阻滞，传导的PR间期恒定，则2：1阻滞为二度Ⅱ型房室传导阻滞；若另外记录到3：2阻滞，传导的PR间期逐渐延长，则2：1阻滞为二度Ⅰ型房室传导阻滞。静注阿托品可抵消迷走神经影响，使房室传导阻滞有所改善，传导比例增加，为二度Ⅰ型房室传导阻滞；若静注阿托品后，阻滞程度加重，说明阻滞部位在希浦系统内，2：1阻滞为二度Ⅱ型房室传导阻滞。

单项选择题 A1型题

李某。患感冒发烧，在治疗中身热逐渐上升，曾屡进西药退热剂，旋退旋起，8天后仍发热39℃，现口燥渴不解，多汗出，咽微痛，背微恶风寒，脉象洪大，舌红，苔薄黄，治宜用（）

A.白虎加人参汤

B.白虎汤

C.大青龙汤

D.桂枝汤

E.以上都不是
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单项选择题

With the spread of inter-active electronic media a man alone in his own home will never have been so well placed to fill the inexplicable mental space between cradle and crematorium. So I suspect that books will be pushed more and more into those moments of travel or difficult defecation (1) people still don’t quite know what to do with.

When people do read, I think they’ll want to feel they are reading literature, or (2) something serious. (3) you’re going to find fewer books presenting themselves as no- nonsense and (4) assuming literary pretensions and being packaged as works of art. We can expect an extraordinary variety of genre, but with an underlying (5) of sentiment and vision.

Translators can only (6) from this desire for the presumably sophisticated. We can look forward to lots of difficult names and fantastic stories of foreign parts enthusiastically (7) by the overall worship of the "global village" Much of this will be awful and some wonderful, (8) don’t expect the press or the organizers of prizes to offer you much help in making the appropriate distinctions. They will be chiefly (9) in creating celebrity, the greatest enemy of discrimination, but a good prop for the (10) consumer.

Every ethnic grouping over the world will have to be seen to have a great writer--a phenomenon that will (11) a new kind of provincialism, more chronological than geographic, (12) only the strictly contemporary is talked about and (13) . Universities, including Cambridge, will include (14) their literature syllabus novels written only last year. (15) occasional exhumation for the Nobel, the achievements of ten or only five years ago will be largely forgotten.

In short, you can’t go too far wrong when predicting more of the same. But there is a (16) side to this--the inevitable reaction against it. The practical things I would like to see happen--publishers seeking less to (17) celebrity through extravagant advertising, (18) and magazines (19) space to reflective pieces--are rather more improbable than the Second Coming (耶稣复临). But dullness never quite darkens the whole planet. In their own idiosyncratic fashion a few writers will (20) be looking for new departures.

17（）

A.prevent

B.explore

C.prohibit

D.generate
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