女性，34岁。患风心，二尖瓣双病变，慢性心房颤动7年．曾反复心力衰竭住院3次。长期服用地高辛和利尿剂。近2周感冒，咳嗽不能平卧，3天来恶心、呕吐来急诊。体检：半卧位，颈静脉充盈。心率80次／min，律齐。二尖瓣区可闻及收缩期和舒张期杂音。两肺有细湿啰音。肝肋下两指，肝颈返流征阳性。宫底脐下一指。心电图示心房颤动，非阵发性交界性心动过速血清钾3mmol／L，妇产科会诊为妊娠4个月。

病人的紧急处理应是（）

A.停用洋地黄，补充钾

B.静脉滴注利多卡因

C.补充钾盐

D.停用洋地黄，静脉注射维拉帕米（异搏停）

E.临时心脏起搏下补充钾盐

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.

11（）

A. for

B. because

C. because of

D. due to