（本题满分10分） 直线y=x-4与抛物线y2=4x交于A、B两点，F为抛物线的

心悸怔忡，失眠多梦，头晕健忘，食欲不振，腹胀便溏，倦怠乏力，面色萎黄。证属

A．胀痛，与精神因素有关，伴胁胀，善太息，脉弦
B．喇痛，伴舌暗，有青紫色瘀斑瘀点，脉细涩或结代
C．闷痛，多见体胖痰多，身重困倦，苔白腻，脉沉滑或沉涩
D．痛势剧烈，突然发作，得温痛减，伴畏寒喜暖，肢冷，舌淡苔白，脉沉迟或沉紧
E．头痛、头晕，失眠，健忘，舌质紫暗，脉细涩

从寄生虫与宿主关系，宿主可分为几类?

执行器按运动方式分类的是（）。

A、气动执行器、液动执行器和电动执行器

B、薄膜式、活塞式和长行程式

C、直行程和角行程

D、故障开和故障关

KVV22-450／750-4³1.5电缆进行绝缘测量时应选用（）进行测量。

A.5000V兆欧表；

B.2500V兆欧表；

C.1000V兆欧表；

D.万用表。

Dear friends,
Water is essential for human health and well being. Water also helps to reduce poverty. Without water, there would be no life on this planet. Although water covers about two-thirds of the Earth’s surface, only 2.5% of the world’s water is drinkable.
Many millions of people around the world face water shortages. Many millions of children die every year from water-borne diseases. And drought regularly afflicts some of the world’s poorest countries. The world needs to respond much better. We need to increase water efficiency, especially in agriculture. We need to free women and girls from the daily chore of carrying water, often over great distances. We must involve them in decision-making on water management.
We need to make sanitation a priority. This is where progress is needed most. And we must show that water resources need not be a source of conflict. Instead, they can call for cooperation. Significant gains have been made. But a major effort is still required. That is why this year marks the beginning of the "Water for Life" Decade. Our goal is to meet the internationally agreed targets for water and sanitation by 2015, and to build the foundation for further progress in the years beyond.
This is an urgent matter of human development, and human dignity. Together, we can provide safe, clean water to all the world’ s people. The world’s water resources are our lifeline for survival, and for sustainable development in the 21st century. Together, we must manage them better.
Thank you.