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问题 单项选择题

急性心肌梗死出现频发性室性期前收缩或室性心动过速，应该首选

A．利多卡因

B．毛花苷丙

C．美托洛尔

D．直流电复律

E．安置临时起搏器

答案

参考答案：A

解析：急性心肌梗死后最常见的心律失常为室性心律失常，包括室性期前收缩，室性心动过速，两者容易演变为心室颤动。因此，一旦出现上述心律失常，应立即使用抗心律失常药物，首选利多卡因。

判断题

有效地应对食物中毒突发事件，提高专业技术人员应对食物中毒突发事件的能力和水平，必须了解食物中毒突发事件应急处理原则、分类和报告程序等。
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单项选择题

The "standard of living" of any country means the average person’s share of the goods and services which the country produces. A country’s standard of living, (1) , depends first and (2) on its capacity to produce wealth." Wealth" in this sense is not money, for we do not live on money (3) on things that money can buy. "Goods" such as food and clothing, and "services" such as transport and " (4) ". A country’s capacity to produce wealth depends upon many factors, most of (5) have an effect on one another. Wealth depends (6) a great extent upon a country’s natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a (7) climate; other regions possess none of them.

Next to natural resources (8) the ability to turn them to use. China is perhaps as well (9) as the USA in natural resources, but suffered for many years from civil and (10) wars, and (11) this and other reasons was (12) to develop her resources. (13) and stable political conditions, and (14) from foreign invasion, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well (15) by nature but less well ordered.

A country’s standard of living does not only depend upon the wealth that is produced and consumed (16) its own borders, but also upon what is indirectly produced through international trade. (17) , Britain’s wealth in foodstuffs and other agricultural products would be much less if she had to depend only on (18) grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would (19) be lacking. A country’s wealth is, therefore, much influenced by its manufacturing capacity, (20) that other countries can be found ready to accept its manufactures.

18（）

A.those

B.what

C.that

D.it
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