预防麻疹的措施，下列哪项不妥A．一般采用皮下注射 B．小学新生应加强注射一次 C．采

病历摘要：患者男性，65岁，夜尿增多2年，3～5次/晚，伴尿线分叉、尿频。无尿痛和肉眼血尿。否认糖尿病、高血压和脑血管意外病史。体检：T36℃，P80次/分，R22次/分，BP138/70mmHg。

应进一步作哪些检查？提示：IPSS=16分，QoL=3分，PSA=2．8ng/ml，最大尿流率=12ml/s，剩余尿量=15ml。尿常规正常。（）

A.直肠指诊

B.前列腺超声检查

C.前列腺CT

D.静脉尿路造影（IVU）

E.前列腺穿刺活检

F.膀胱镜检查

阅读理解。

     There was room for all of us, and the sleeping bags kept the night coldness away. We would listen to the

sound of the river, and hear the coyotes (土狼) howling along the hills not far away.

     Those were the cool summer nights of the mid-nineties in Southern Alberta, Canada, when the four

children were young and we would lie on the trampoline (蹦床) in the backyard late at night, for the sun would

not set till late in July and August. We would look at the stars up above and never grow tired of it. These were

the times when I would tell the stories of my own childhood and teach the kids life's lessons that have been

remembered to this day. I chuckle (轻声地笑), as I recall the time when we heard a coyote not far away, and

then I started a story about a bear approaching the trampoline. The bear came close (in the story), and the kids

snuggled up to mom and me, until suddenly I'd let out a howl and grab all the kids and they would be

frightened and jump up and then all laugh, "Daddy, you scared us!"

     Now the children are in their mid and late teens, but they fondly remember the starry nights on that

trampoline. Recently my oldest daughter on her wedding day sang a song for her parents, entitled "I'll always

be your little girl". She wrote the music and words and yes indeed: it included a memory of those starry nights.

     I have learned as a parent that one of the greatest gifts we can give our children as they are growing up is

the time to tell them stories, or if telling stories is not that simple, perhaps read them a story. They can read

their own books, but telling or reading them a story will create a close relationship with pleasant memories

such as those late summer nights under the starry sky.

1. The passage is mainly about _____.

A. coyotes' effects on children

B. the relationship between children

C. the author's unforgettable experiences

D. the author's memories of starry nights

2. The underlined part "snuggled up" probably means _____.

A. lay down

B. got close

C. gave in

D. struggled forward

3. How do the children feel about their childhood?

A. Very enjoyable.

B. A bit regretful.

C. Rather busy.

D. Sort of dull.

4. In the last paragraph, the writer mainly wants to express _____.

A. it is easy to tell stories to children

B. kids should read stories themselves

C. it is important to tell or read stories to kids

D. it's necessary to spend summer nights with kids

致使食品发生腐败变质的主要微生物是（）。

A.细菌

B.霉菌

C.酵母

D.病毒

E.以上都不是

从远古的有机分子的海洋中发展了植物、动物、人类和全球生态系统。是什么驱动自然世界朝着复杂性前进的呢 

达尔文在1859年发表了震动科学界和整个社会的《物种起源》，创立了进化论。达尔文的进化论主要讨论了两个互相联系的问题：生物是不是由进化而来的生物是怎样进化的他提出自然选择学说来说明生物进化的原因和过程。 

但是，达尔文不可能预见到自组织的力量。自从达尔文以来，生物学家一直把自然选择看作是有序的惟一来源。自组织是最近发现的某些复杂系统的固有性质，即某些非常无序的系统自发地“结晶”成为高度有序。当一个开放系统（与外界既有能量又有物质交换的系统）在远离热力学平衡时，无序的非平衡态的稳定性并不像在 * * 衡条件下那样有保证；系统通过与外界环境不断交换物质与能量，当外界变化达到一定的值时，无序有可能失去稳定性。其中的某些涨落可能被放大而使系统达到一种在时间上、空间上或功能上的新状态。这种在远离平衡情况下所形成的有序结构是自发出现的，故称自组织。自组织是生命世界的重要性能之一。计算机模型正揭示这类复杂系统如何能自发地自己组织起来以实现稳定的基因活动循环――所有生命的基本特征。有人认为人类基因库也许是个自组织系统。这样，有机体之所以具有某些特征，也许并不是因为自然选择造成的，而是因为自然选择作用的对象具有自组织特性。人们已经开始认识到，进化是自然选择和自组织相结合的产物。

自组织是指（）

A．某些复杂系统的固有性质

B．有序的另一来源

C．某些非常无序的系统自发地“结晶”成为高度有序

D．一个开放系统在 * * 衡条件下达到的新状态

接地刀闸在异常条件（如短路）下，可在规定时间内承载规定的（）；但在正常回路条件下，不要求承载（）。