问题 单项选择题

溃疡性结肠炎最严重的并发症是

A.肠梗阻

B.肠穿孔

C.癌变

D.中毒性结肠扩张

E.结肠狭窄

答案

参考答案:D

解析:[解题思路] 中毒性结肠扩张多发生在暴发型或重症溃疡性结肠炎患者。结肠病变严重而广泛,累及肌层及肠肌神经丛——结肠蠕动消失,肠内容物大量积聚,引起急性结肠扩张,一般以横结肠最为严重。常因低钾、钡灌肠、使用抗胆碱能药或鸦片酊而诱发,是溃疡性结肠炎最严重的并发症。[命题规律] 考察“溃疡性结肠炎并发症”。一般掌握。

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In the early 1970’s, Citibank of New York City became one of the first financial institutions to install ATM’s on a large scale. Since then, the (1) of automated teller machines has increased dramatically. At the time, the bank hoped (2) their operating costs by replacing human tellers with machines. Little did they (3) that the cash machines would become so successful. However, as more banks added (4) automated service through ATM’s, the machines mushroomed all over the world.
To use an ATM, all you need is a (5) issued by your bank. Your bank may also (6) through a credit card, such as MasterCard or Visa. To begin a (7) , you need to insert the card into an ATM and punch in a personal identification number on the (8) . The personal ID number may consist of (9) and can prevent anyone from using the card.
The ATM next flashes instructions on its (10) for carrying out transaction. To get cash, for example, you are instructed to (11) that indicate whether the money should be withdrawn from a checking or a savings account and the (12) . This request is then displayed on the screen. After you press a button to (13) that the information is correct, the ATM goes to (14) .
How safe, you may ask, is banking by ATM The (15) is meant to prevent anyone, no matter who you are, from using a cash card (16) . If you enter the wrong ID number for a card, a message on the screen will (17) . If you fail to produce the correct number for three times, most machines will (18) .As another precaution against (19) , the bank generally limits the amount that may be withdrawn by cash card (20) , say, to $ 200.