脑囊虫病退变死亡时会出现（） A.缩小 B.出血 C.钙化 D.脑水肿

在下列空格处填上恰当的虚词。

　　在传统的文本里，这些圣贤人物都居于高堂圣殿，神圣不可侵犯，（①）到了鲁迅的笔下，却全都回到了日常生活情景中，抹去了英雄的神光，还原于常人、凡人的本相。（②）《奔月》不写射日英雄后羿当年的赫赫战功，（③）竭力写他功成名就以后，成为普通人的遭遇：天下的鸟兽全被射死，再无用武之地，（④）整日为吃食而奔波，最后（⑤）“老婆”嫦娥（⑥）远走高飞。先驱者的命运的思考与表现，发人深省。

①_______②_______③_______ ④_______⑤_______⑥_______

阅读理解

     Do you want to live another 100 years or more? Some experts say that scientific advances will one

day enable humans to last tens of years beyond what is now seen as the natural limit of the human life

span.

      "I think we are knocking at the door of immortality(永生) , " said  Michael  Zey, a  Montclair State

University business professor and author of two books on the future. "I think by 2075 we will see it and

that's a conservative estimate(保守的估计)."

      At the conference in San Francisco, Donald Louria, a professor at New Jersey Medical School in

Newark said advances in using genes as well as nanotechnology(纳米技术) make it likely that humans

will live in the future beyond what has been possible in the past. "There is a great push so that people can

live from 120 to 180 years," he said. "Some have suggested that there is no limit and that people could

live to 200 or 300 or 500 years.

     However,many scientists who specialize in ageing are doubtful about it and say the human body is just

not designed to last past about 120 years. Even with healthier lifestyles and less disease,they say the

failure of the brain and organs will finally lead all humans to death.

     Scientists also differ on what kind of life the super aged might live. "lt remains to be seen if you pass

120 ,you know; could you be healthy enough to have good quality of life?" said Leonard Poon, director

 of the University of Georgia Gerontology Centre. "At present people who could get to that point are not

in good health at all. "

1. By saying " we are knocking at the door of immortality" , Michael Zey means ___________.  

A. they believe that there is no limit of living

B. they are sure to find the truth about long living

C. they have got some ideas about living forever

D. they are able to make people live past the present life span

2. Donald Louria's attitude towards long living is that_______.  

A .people can live from 120 to 180

B. it is still doubtful how long humans can live

C. the human body is designed to last past about 120 years

D. it is possible for humans to live longer in the future

3. The underlined word in"it"( in Paragraph 4)refers to_______.  

A  a great push

B. the idea of living beyond the present life span

C. the idea of living from 200 to 300 years

D. the conservative estimate

4. What would be the best title for this text? 

A. Living Longer or Not

B. Science , Technology and Long Living

C. No Limit for Human Life

D. Healthy Lifestyle and Long Living

成釉器来源于（）.

A.牙板

B.前庭板

C.牙 * *

D.外胚间叶细胞

E.以上都不是

WHO推荐的捷径调查，只调查有代表性的六个年龄组，除外下列哪个

A．65岁组

B．20岁组

C．5，12，35岁组

D．44岁组

E．74岁，组

企业的大客户数量在（）个以上时，适宜建立大客户服务中心。

A、14

B、16

C、18

D、20