中国男子足球队是否入围了2008奥运会？（）

按照甲图所示的电路图，将乙图中各元件连接起来。（用笔画线表示导线，导线不许交叉）

最早使用品牌的是（）

A.美国专利药物制造商

B.Levi’s公司

C.日本百货业

D.英国御用商品制造商

脑动脉瘤，医生把它形象地比喻为“颅内炸弹”，因为脑动脉瘤患者常常因突然颅内出血导致残疾或死亡。

各种因素引起的血压突然增高，是诱发脑动脉瘤破裂的主要原因，所以，过去预防脑动脉瘤破裂，常常从防治血压升高人手。在一张人脑动脉示意图上可以看到，颅底动脉环是脑动脉瘤的高发病区。

为什么人会产生脑动脉瘤脑动脉瘤为什么容易破裂多年的临床手术，得到了大量脑动脉瘤病体组织，对它们进行研究，科研人员发现：“在动脉瘤壁上有一种特殊的物质，通过分子水平的研究实验，发现是一种免疫酶，我们可以推断动脉瘤的发生、破裂是和免疫有关的。

免疫包括细胞免疫和体液免疫。免疫反应往往对人自身有保护作用，但有时免疫反应对人体自身也有害，免疫细胞会杀死外来有害细菌，同时也会杀死与这些细菌相结合的人类的正常细胞。还有一种情况，免疫细胞会杀死自己不认识的人类的正常细胞。这样可能导致自身免疫性疾病，如风湿病、肾炎。人类脑动脉瘤的发生和破裂也与免疫反应有关。

研究人员对这种(囊性)脑动脉瘤组织进行分子生物学实验，发现在脑动脉瘤壁上有大量免疫细胞聚集，免疫细胞可以产生一些破坏脑动脉壁的生物酶，正是这类酶可以使脑动脉的强度下降、鼓出，形成了脑动脉瘤。在鼓出部位，也就是在脑动脉瘤处，随着免疫反应的增加和生物酶作用的增强，免疫细胞破坏了脑动脉内膜的弹力纤维和中膜的胶原纤维，弹力纤维被破坏后易破裂，使脑动脉瘤的壁越来越薄，最后导致脑动脉瘤破裂。

正确认识发病机理是有效防治疾病的关键。北京天坛医院神经外科的这一研究成果，开拓了防治脑动脉瘤疾病的新方向。控制脑动脉瘤的发生、发展和破裂，对最终解除“颅内炸弹”，拯救患者生命，有着重要现实意义。控制破坏性免疫反应，提高相关生物酶的作用是最终控制“颅内炸弹”的重要措施。

下列对脑动脉瘤理解不正确的是（）。

A．脑动脉瘤是一种免疫性疾病

B．预防脑动脉瘤应从防治血压升高人手

C．正确认识脑动脉瘤的发病机理是防治脑动脉瘤的关键

D．颅底动脉环是脑动脉瘤的高发区

One morning a few years ago，Harvard President Neil Rudenstine overslept. For this busy man，it was a sort of alarm: after years of non-stop hard work，he might wear himself out and die an early death.

Only after a week's leave—during which he read novels, listened to music and walked with his wife on a beach—was Rudenstine able to return to work.

In our modern life, we have lost the rhythm between action and rest. Surprisingly, within this world there is a universal but silly saying:“I am so busy.”

We say this to one another as if our tireless efforts were a talent by nature and an ability to successfully deal with stress. The busier we are, the more important we seem to ourselves and, we imagine, to others. To be unavailable to our friends and family, and to be unable to find time to relax—this has become the model of a successful life.

Because we do not rest, we lose our way. We miss the guide telling us where to go, the food providing us with strength, the quiet giving us wisdom.

How have we allowed this to happen? I believe it is this: we have forgotten the Sabbath, the day of the week—for followers of some religions—for rest and praying. It is a day when we are not supposed to work, a time when we devote ourselves to enjoying and celebrating what is beautiful. It is a good time to bless our children and loved ones, give thanks, share meals，walk and sleep. It is a time for us to take a rest, to put our work aside, trusting that there are larger forces at work taking care of the world.

Rest is a spiritual and biological need；however，in our strong ambition to be successful and care for our many responsibilities，we may feel terribly guilty when we take time to rest. The Sabbath gives us permission to stop work. In fact, “Remember the Sabbath ”is more than simply permission to rest；it is a rule to obey and a principle to follow.

50. The “alarm” in the first paragraph refers to “______”.

　　A. a signal of stress                                  B. a warning of danger

　　C. a sign of age                                      D. a spread of disease

51. According to Paragraph 4,a successful person is one who is believed to ____.

　　A. be able to work without stress　　            B. be more talented than other people

　　C. be more important than anyone else　　 D. be busy working without time to rest

52. Some people feel guilty when taking time to rest because they ____.

　　A. think that taking a rest means lacking ambitions

　　B. fail to realize that rest is an essential part of life

　　C. fail to realize that religions force them to rest

　　D. think that taking a rest means being lazy

53. What is the main idea of this passage?

　　A. We should balance work with rest.

　　B. The Sabbath givers us permission to rest.

　　C. It is silly for anyone to say “I am so busy.”

　　D. We should be available to our family and friends.

根据适应过程中的态度可将适应分为主动适应和（）适应。

A.生理

B.心理

C.被动

D.内部