计算题：某地下连续墙用抓斗挖槽，5天成墙360m2，其中纯抓时间为90h，辅助工作时

酮症酸中毒对胎儿的影响，不包括（）

A.胎儿窘迫

B.胎儿畸形

C.宫内发育迟缓

D.巨大儿

E.死胎

.

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.”

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 aging are doubtful about it and say the human body is just not designed to last about 120 years. Even with healthier lifestyles and less disease, they say 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. “ It 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 Center. “ At present people who could get to that point are not in good health at all.”

67. By saying “ we are knocking at the door 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

68. Donald Louria’s attitude toward 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 about 120 years

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

69. The underlined “ it” (Para. 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

D. the conservative estimate

70. 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

试述实验法与访谈、观察等方法相比，有什么特点

狭义的国际物流主要指国际贸易物流。

下列关于国有独资公司监事会的表述，正确的有( )。

A．国有独资公司监事会全部成员都由国有资产监督管理机构委派

B．国有独资公司监事会中必须有职工代表

C．董事、经理及财务负责人不得兼任监事

D．监事会成员中的职工代表由公司职工代表大会选举产生