珠穆朗玛峰高出海平面8848米，吐鲁番盆地低于海平面155米，它们的极差是___

面向对象方法有许多特征，如软件系统是由对象组成的；______；对象彼此之间仅能通过传递消息互相联系；层次结构的继承。

A．开发过程基于功能分析和功能分解

B．强调需求分析重要性

C．把对象划分成类，每个对象类都定义一组数据和方法

D．对既存类进行调整

带压开采制定的安全措施，经安监部门审批后就可执行。

阅读理解。

     根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

     Watching a sporting event with family and friends under the sun is a great experience in summer.

   1   In the United States, heat exposure led to 8,000 deaths between 1979 and 2003. Luckily, a

little prevention can go a long way towards making sure of an enjoyable day.

     Know the danger

     Heat-related illnesses do not require record-breaking temperatures to occur.   2   The body's

temperature can reach 106 or 107 degrees Fahrenheit on a 90-degree day, creating a potentially

deadly situation. Factors such as age, weight or a medical condition can influence people.

     Drink plenty of water

       3   Sweating is your body's key way to keep cool, so drink water to stay well hydrated(含水的)

before you feel thirsty. A cool beer may sound perfect on a hot day, but drink responsibly. Alcohol

stops the body's cooling system and causes you to go to the bathroom frequently.

         4    

     Wear light-colored and loosely fitting clothing, so air can go around your body and help keep you

cool. A hat is a must to help you keep cool, since your head contains many blood vessels(血管), and

sun block(防晒乳) is always a good idea.

     Take action

     What should you do if you are suffering from the heat while watching your favorite event?

     Get up and go. It is a simple piece of advice, but could make the difference between a quick recovery

and something more severe that requires medical attention. The ideal thing is to move yourself from the

position you're in to an area that is a little cooler.  5  

A. Dress for the occasion

B. Weather-related causes

C. In hot weather, it is essential to stay hydrated.

D. You may miss a little of the action, but it beats missing a lot.

E. But when you add sun exposure to the crowds, the results can be deadly.

F. It is also important to take advantage of services the equipment provides.

G. Temperatures between 80 and 90 degrees Fahrenheit can be dangerous.

创伤和手术引起机体全身性反应，包括（）

A.血流动力学反应

B.内分泌反应

C.代谢反应

D.免疫反应

E.体温反应

“一个中心，两个基本点”的辩证统一关系是

A．离开四项基本原则和改革开放，社会主义社会的一切发展和进步就会失去物质基础
B．离开经济建设这个中心，社会主义社会的一切发展和进步就会失去物质基础
C．离开四项基本原则和改革开放，经济建设就会迷失方向和丧失动力
D．离开经济建设这个中心，四项基本原则就会失去发展动力