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问题 单项选择题 A3/A4型题

患者，男性，68岁。餐后上腹部胀满半月余，间断呕吐宿食数次，体重下降10kg。上消化道造影示"胃窦部巨大龛影，幽门不全梗阻"。既往糖尿病史5年。

下列手术前后对糖尿病的处理，错误的是（）

A.术前应保持血糖稳定

B.术前应纠正水电解质代谢紊乱和保持酸碱平衡

C.术前应控制尿糖为+～++

D.手术应在当天尽早施行，以缩短术前禁食时间，避免酮体生成

E.术后尿糖+，应立即给予胰岛素12U

答案

参考答案：E

单项选择题

乙烷对催化剂的影响是（）。

A、提高活性

B、降低活性

C、没有影响

D、提高选择性
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单项选择题

Many people are surprised when they find the Internet(因特网)was set up in the 1960s. At that time, computers were large and expensive. Computer networks(网络) didn’t work well. If one computer in the network broke down, then the whole network stopped. So a new network system (系统) had to be set up. It should be good enough to be used by many different computers. If a part of the network was not working, information could be sent through another part. In this way computer network system would keep on working all the time.
At first the Internet was only used by the government, but in the early 1970s,universities(大学) ,hospitals and banks were allowed(允许) to use it too. However, computers were still very expensive and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and easier to use.
Today it is easy to get on-line(上网) and it is said that millions of people use the Internet every day. Sending e-mail is more and more popular among students.
The Internet has now become one of the most important parts of people’s life.

The word" information" may probably mean

A. letter


B. message

C. number
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