搜题请搜索小程序“爱下问搜题”
问题 单项选择题 共用题干题

患者女性，76岁。因突发胸痛1天伴晕厥急诊，心电图如图3-3-13所示。

心电图中第8个QRS波群变窄的原因为（）。

A.快频率依赖性右束支阻滞

B.慢频率依赖性右束支阻滞

C.交界性期前收缩

D.双束支阻滞

E.室性融合波

答案

参考答案：E

完形填空

Directions: Complete the following passage by filling in each blank with ONE word that best fits the context.

New studies show how food and its production affect the globe and its climate. The process of making a hamburger, for example, requires lots of energy. A cow has to be fed and raised on farmland. And cow waste is a major source of methane（沼气）—  48 especially powerful greenhouse gas. The cow has to be killed. The meat has to be processed and shipped,   49 takes fuel. Most of the cow won’t even be used for meat people eat. By the time a hamburger finally lands on a dinner plate,   50 has made bad effect on the environment.

We can reduce the production of global warming gases by eating less beef. Other kinds of meat like pork and chicken do  51 harm to the environment ---at least  52 terms of the amount of greenhouse gases released.   53 , all kinds of meat are harder on the planet than vegetables.  54 changing our diet to less meat and more vegetables, as it turns  55 , may do the world some good.
查看答案
选择题

下列各句中，没有语病的一句是（  ）

A．诚信缺失对社会道德是毁灭性的伤害，当前为公众深恶痛绝的那些恶性事件，每一件都深深地刻着背信弃义的烙印和丑恶心理。

B．山东省在全国率先打破高考户籍限制，从2014年起，凡在山东省高中阶段有完整学习经历的无山东户籍的考生均可在山东省就地报名参加高考。

C．食品和药品的安全保障是监管和执法部门的首要工作。能否打击食品和药品安全犯罪，不只是维护市场秩序，更是在打一场形势严峻的公众健康保卫战。

D．天上王城景区地处沂蒙腹地的沂水县泉庄乡，以沂蒙七十二崮之首的纪王崮为中心，以商周时期纪国迁都至此的历史故事为主题整合建成的4A级景区。
查看答案