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问题 单项选择题 A3/A4型题

患者，男性，50岁。近2年出现活动后心慌、气短、呼吸困难，近1周症状加重，轻咳嗽，双下肢水肿，夜间阵发性呼吸困难。既往身体健康，无高血压、糖尿病、高血脂等，不吸烟，偶饮少量酒。体检：血压120/70mmHg，高枕卧位，颈静脉充盈，双肺底可闻及少许湿啰音，散在干啰音，心界向两侧扩大，心率90次份，心律齐，心尖部可闻及2/6级收缩期吹风样杂音，P2>A2，肝肋下2cm，双下肢轻度水肿。

为明确诊断，应首选的检查是（）

A.血常规

B.超声心动图

C.胸部X线平片

D.心电图

E.动脉血气分析

答案

参考答案：B

单项选择题

补充水的浊度要求（）

A、＜15mg/l

B、＜20mg/l

C、＜25mg/l

D、＜10mg/l
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单项选择题

Advertisers tend to think big and perhaps this is why they’re always coming in for criticism. Their critics seem to resent them because they have a flair for self-promotion and because they have so much money to threw around. "It’s iniquitous," they say, "that this entirely unproductive industry (if we can call it that) should absorb millions of pounds each year. It only goes to show how much profit the big companies arc making. Why don’t they stop advertising and reduce the price of their goods After all, it’s the consumer who pays."
The poor old consumer. He would have to pay a great deal more if advertising didn’t create mass markets for products. It is just because of the heavy advertising that consumer goods are so cheap. But we get the wrong idea if we think the only purpose of advertising is to sell goods. Another equally important function is to inform. A great deal of the knowledge we have about household goods derives large from the advertisements we read. Advertisements introduce us to new products or remind us of the existence of ones we already know about. Supposing you wanted to buy a washing-machine, it is more than likely you would obtain details regarding performance, price, etc. from an advertisement.
Lots of people pretend that they never read advertisements, but this claim may be seriously doubted. It is hardly possible not to read advertisements these days. And what fun they often are, too] Just think what a railway station or a newspaper would be like without advertisements. Would you enjoy gazing at a blank wall or reading railway by-laws while waiting for a train Would you like to read only closely-printed columns of news in your daily paper A cheerful, witty advertisement makes such a difference to a drab wall or a newspaper full of the daily ration of calamities.
We must not forget, either, that advertising makes a positive contribution to our pockets. Newspapers, commercial radio and television companies could not subsist without this source of revenue. The fact that we pay so little for our daily paper, or can enjoy so many broadcast programs is due entirely to the money spent by advertisers. Just think what a newspaper would cost if we had to pay its full price !
Another thing we shouldn’t forget is the "little ads", which are in virtually every newspaper and magazine. What a tremendously useful service they perform for the community ! Just about anything can be accomplished through these columns. For example, you can find a job, buy or sell a house, announce a birth, marriage or death in what used to be called the "hatch, match and dispatch" columns; but by far the most fascinating section is the personal or "agony" column. No other item in a newspaper provides such entertaining reading or offers such a deep insight into human nature. It’s the best advertisement for advertising there is!

The writer seems to think that critics’ judgment on the role of advertising is______

A. reasonable.
B. unfair.
C. superficial.
D. foolish.
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