问题 单项选择题 A1/A2型题

关于急性左心衰竭的处理,以下哪一项最不恰当()。

A.半卧位

B.肌注吗啡

C.抬高下肢

D.呋塞米静注

E.多巴酚丁胺静脉泵注

答案

参考答案:C

解析:急性左心衰竭处理原则:强心,利尿,镇静,吸氧,减少氧耗,降低心脏前负荷。半卧位可减少回心血量,降低前负荷;肌肉注射吗啡可镇静,减少氧耗;呋塞米静脉注射可减少血容量,减低前负荷;多巴酚丁胺静脉泵注可增强心肌收缩力;抬高下肢可增加回心血量,增加前负荷,加重心脏负担。

单项选择题
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Going home for Christmas is a tradition of the holiday season. No matter where you may be the rest of the years, being at “home” with your family and friends for Christmas is a “must”. The Thanksgiving and Christmas holidays are the busiest times of the year at airports, train stations and bus stations. It seems that all America is on the move and Americans are on their way to spend the holidays with their loved ones.

This means that the house will be full of cousins, aunts and uncles that might not see each other during the year. Everyone joins in to help in the preparation of the festival. Some family members get to choose a Christmas tree to buy and bring home. Others decorate the house or wrap presents. And of course, each household needs to make lots of food!

At Christmas Eve gatherings adults have eggnog, which is made of cream, milk, sugar, eggs and brandy. Plenty of  eggnog  or hot cocoa is on hand in colder climates for carolers, or people who go from house to house sing Christmas carols to their neighbors.

Long ago, each child hung a stocking, or sock, over the fireplace. Santa entered down the chimney and left candy and presents inside the socks for the children. Today the tradition is carried on, but the socks are now large red sock-shaped fabric bags still called stockings. Each child can’t wait to open his or her eyes to see what Santa has left in the stocking.

Giving gifts is a Christmas tradition. However, in recent years, more and more people have complained that Christmas is too commercialized(商业化) especially in large cities. Store owners begin advertising and decorating very early in hopes of selling more goods. Some people believe that the origin of Christmas has been lost.

46.It is a traditional custom for Americans ____________.

A.to buy Christmas trees and bring them to churches for Christmas

B.to drink beer on Christmas Eve

C.to go home for Christmas with their family and relatives

D.to hung stockings on the chimney

47.The underlined word “eggnog” in the third paragraph is a kind ____________.

A.drink                  B.food                   C.egg                     D.present

48.Each child hung a stocking over the fireplace in order to____________.

A.get some eggnog                                  B.have a look at Santa

C.get some candy and presents                 D.get some money from his/ her parents

49.The last paragraph wants to tell us that  ____________.

A.giving gifts is a Christmas tradition     B.giving gifts is getting more and more commercialized

C.store owners hope to get more presents  D.people think there will be no Christmas in the future