粪便隐血试验呈现阳性，每日出血量要达到（）。 A.50ml B.20～30ml C.

鲜或干的橙

阅读理解。

     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 over-consumption 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 green-house 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 also applies 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 realise just how much unnecessary

material we are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain

to climb.

1. What does the underlined phrase "over-consumption" refer to?

A. Using too much packaging.

B. Recycling too many wastes.

C. Making more products than necessary.

D. Having more material than is needed.

2. The author uses figures in Paragraph 2 to show _____.

A. the tendency of cutting household waste

B. the increase of packaging recycling

C. the rapid growth of supermarkets

D. the fact of packaging overuse

3. 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

4. What can be inferred from Paragraph 4?

A. Unpackaged products are of bad quality.

B. Supermarkets care more about packaging.

C. It is improper to judge quality by packaging.

D. Other products are better packaged than food.

5. What can we learn from the last paragraph?

A. Fighting wastefulness is difficult.

B. Needless material is mostly recycled.

C. People like collecting recyclable waste.

D. The author is proud of their consumer culture.

医务人员根据确定的医学行为目标．拟订多个诊疗方案，然后从中选出达到最佳诊疗效果的方案是（）

A.医学伦理决策

B.医学道德修养

C.医学伦理难题

D.医学道德教育

一款游戏能否吸引玩家，能否激发游戏者对游戏的激情，很大程度上______游戏任务。游戏任务系统其实是通过各种任务剧情使游戏者融入到______社会当中。在进行各项任务的同时，玩家已经不知不觉地______起任务当中的某个角色，全身心地感受着虚拟世界当中的喜怒哀乐。
填入画横线部分最恰当的一项是( )。

A．依赖于 现实 挑战
B．取决于 虚拟 扮演
C．取决于 现实 扮演
D．依赖于 虚拟 挑战

下列哪一项不适宜燃烧法处理（）

A、有机溶剂蒸气

B、碳氢化和物

C、除臭

D、电镀车间的铬酸蒸气