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问题 单项选择题

男，70岁，肝炎病史16年，近二月来纳差、消瘦，肝区疼痛。查体：轻度黄疸，面部有蜘蛛痣，腹膨隆，肝肋下4cm，质硬、压痛。脾肋下3cm，移动性浊音阳性。临床上应首先考虑的是（）

A.肝硬化

B.慢性肝炎

C.原发性肝癌

D.继发性肝癌

E.结核性腹膜炎

答案

参考答案：C

解析：具有慢性肝炎，肝硬化病史，出现持续性肝区痛，肝肿大，应警惕原发性肝癌，应作AFP，B超，CT检查有助于肝癌诊断。

单项选择题

Ask someone what they have done to help the environment recently and they will almost certainly mention recycling. Recycling in the home is very important of course. However, being forced to recycle often means we already have more material than we need. We are dealing with the results of that overconsumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place.
The total amount of packaging increased by 12% between 1999 and 2005. It now makes up a third of a typical household’s waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard.
Too much packaging is doing serious damage to the environment. The UK, for example, is running out of it for carrying this unnecessary waste. If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place. Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.
But this is not just about supermarkets. It is about all of us. We have learned to associate packaging with quality. We have learned to think that something unpackaged is of poor quality. This is especially true of food. But it is also applied to a wide range of consumer products, which often have far more packaging than necessary.
There are signs of hope. As more Of us recycle, we are beginning to realize just how much unnecessary materials are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.

According to the text, recycling

A. helps control the greenhouse effect
B. means burning packaging for energy
C. is the solution to gas shortage
D. leads to a waste of land
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单项选择题

投资者发出委托指令的形式不能（）。

A、代理委托

B、当面委托

C、电话委托

D、函电委托
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