问题 单项选择题 A1/A2型题

对肠套叠下列哪一种情况不应采取非手术疗法()。

A.病程不超过48小时,全身情况好

B.无腹膜炎体征

C.小肠型肠套叠

D.无明显脱水及离子紊乱

E.无明显腹胀

答案

参考答案:C

解析:肠套叠非手术疗法的适应证:病程不超过48小时,全身情况良好,无明显脱水及离子紊乱,无明显腹胀者。禁忌证:病程超过2天以上,全身情况显著不良如严重脱水、高热、休克者,对3个月以下婴儿尤应注意;高度腹胀,有腹膜炎体征,X线腹平片可见多液平面者;套叠头部已达脾曲,肿物硬,张力大者;多次复发疑有器质性病变的肠套叠;小肠型肠套叠。

阅读理解

Reading comprehensionReading comprehension

       In the mid 1990's, people started doing business on the Internet. There were two kinds of companies

then.  First,  there were traditional companies.  They sold things in stores.   Then,   there were Internet

companies. They didn't have a store, and they only sold things on the Net.

       Traditional companies didn't want to lose any business. Quickly, they made their own websites and

began selling things on the Net. These are the so-called"brick and click"companies (砖块点击公司).

Many stores are made of brick. And you click on your mouse to buy things with your computer. That's

where the name"brick and click"comes from.

       By the late 1990's, competition among Internet companies was great. So e-business like amazon.

com, buy.com, and etoys.com were in trouble. Their profits (利润) were not very high. Many of these

businesses were losing much money. In 2000, many e-businesses went out of business.

       Why are brick and click companies, like Barnes and Walmart so successful? First, many customers

know and trust (相信) their names. Their websites are easy to remember. These companies also have a

lot of experience. In a word, they know how to run a successful business.

In the world of e-commerce (商业), companies are fighting for every dollar and every customer. Will

brick and click companies win the war? Only time will tell.

Answer the following questions according to what you read.

1. How many kinds of companies were there in the mid 1990's?

                                                                                                          

2. Did Internet companies sell things in stores or on the Net?

                                                                                                           

3. What did the traditional companies do to keep their business?

                                                                                                           

4. What gave Internet companies a lot of trouble by the late 1990's?

                                                                                                           

5. What can you learn from Barnes and Walmart if you have an Internet company?

                                                                                                           

单项选择题