用热力或其他适宜方法将物质中的微生物杀灭或除去的方法是A．空气净化B．灭菌法C．灭菌

下列句中成语（熟语）使用不恰当的一项是（    ）

A．2004年初春的神洲大地，阳光明媚，全国人民喜气洋洋地沉浸在一个特殊的春天里，谁也不曾想到，高致病性禽流感已在各地蔓延。

B．他这样做自认为很稳妥，其实是如履薄冰，稍不注意就会出现错误。

C．失学儿童无助的眼神深深地打动了这位海外华侨，“人非草木，孰能无情”，他当即决定损赠200万元人民币帮助这个地区的贫困孩子入学。

D．她的歌声能与专业歌手媲美，音色清脆甜美，音域清纯厚重，悦耳动听，听人振奋。

Just as world oil scarcity is already causing international conflicts, so will the scarcity of water reach a point where wars will break out. The statistics on water are already scary. Already well over 1 billion people suffer from water shortages and 30 countries get more than a third of their water from outside their borders-an obvious source of disputes and instability especially as the climate changes. The whole of the sub-Saharan Africa, most of South Asia and western South America are most at risk. The reason: the rapid melting of glaciers due to global warming.

At the meeting of the coalition of 27 International charities last month, Gareth Thomas, minister of International Development of the British government, wrote to prime minister Gordon Brown demanding action to ensure fresh water to 1.1 billion people with poor supplies. "If we do not act now, the reality is that water supplies may become the subject of international conflict in the years ahead. We need to invest now to prevent us having to pay that price in the future." Thomas said. The department warned that two-thirds of the word’s population will live in water-stressed countries by 2025.

The coalition of charities has appealed for a global effort to bring running water to the developing world and supply sanitation to a further 2.6 billion people. It said that international investment is needed now to prevent competition for water to destabilize communities and escalate into conflicts.

Tackling the water and sanitation crisis is essential if the Millennium Development Goal Call to Action is to be a success. Otherwise, progress on health, education, and environment sustainability will be undermined. Each year 443 million school days are lost globally to diarrhea and 1.8 million children die from these diseases. In fact, it is often not realized that investing in sanitation and water brings the greatest public health gains, more than any other single development intervention and delivers enormous economic gains. Already, some Asian countries have put tackling these issues at the forefront of their development efforts. The Millennium Development Goals aim to halve the proportion of people without access to safe drinking water by 2015. To achieve that urgent action needs to be taken.

There is no doubt that climate change is potentially the most important factor affecting water shortage. This, compounded with a growing and increasingly urbanized global population will put pressure on food and water. For a temperature rise of 2 C, which is likely to happen by 2050, there would be a catastrophic 2 to 3 billion people suffering from water stress.

According to Gareth Thomas, （） is the price we have to pay for water shortage if we do not take immediate action.

A．sanitation crisis

B．international conflict

C．global warming

D．over-urbanization

下列结构中，哪些主要存在于真核细胞中（）

A、内含子

B、操纵子

C、重复序列

D、线状DNA分子（ACD）

乳腺癌作放射治疗时切线野的范围正确的是（）。

A.不作腋锁野照射时，上界应在锁骨头下缘水平

B.作腋锁野照射时，上界一般在第二前肋水平

C.下界在 * * 皱襞下2cm，外切野在腋中线或腋后线，内切野视是否要包括同侧内乳淋巴结而定

D.切线野的宽度应包括全部乳腺组织及2～3cm厚的肺组织在内

E.以上都正确