题目内容

程序是______;进程是______。

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中国科学院刚成立的时候,郭沫若想请严济慈先生到科学院担任领导工作,严济慈说科学工作离开实验室,科学的生命就等于结束了。郭沫若说:“______。”从此,严济慈参加了科学院的领导工作。填入横线处最恰当的是:

A. 你说的很对,但是如果你能合理地安排时间,还是可以兼顾科学实验的
B. 你说的很对,但是如果你能因此使千百万人进入这个实验室,这不是更伟大吗
C. 科学工作也离不开做领导工作,我相信你能做出正确的选择
D. 科学工作也离不开领导工作,你应从实际出发

若程序Pa和Pb单独执行时分别用Ta和Tb,Ta=1小时,Tb=1.5小时,其中处理器工作时间分别ta=18分钟,tb=27分钟,如果采用多道程序设计方法,让Pa、Pb并行工作,假定处理器利用率达到50%,另加15分钟系统开销,请问系统效率能提高多少

一个部落或种族在历史的发展中灭绝了,但它的文字会留传下来。“亚里洛”就是这样一种文字。考古学家是在内陆发现这种文字的。经研究“亚里洛”中没有表示“海”的文字,但有表示“冬”、“雪”、“狼”的文字。因此,专家们推测,使用“亚里洛”文字的部落或种族在历史上生活在远离海洋的寒冷地带。以下哪项如果为真,最能削弱专家上述推测

A. 蒙古语中有表示“海”的文字,尽管古代蒙古人从没见过海
B. “亚里洛”中有表示“鱼”的文字
C. “亚里洛”中有表示“热”的文字
D. “亚里洛”中没有表示“山”的文字

Task 3 How hard is it to get beautiful hair Beautiful hair cannot be taken for granted. Environmental factors, chemical treatments and the mechanical damage done by combs, brushes and blow dryers all have a bad effect on the hair in the long run. The hair parts into thin pieces, loses its brightness, becomes hard and easily broken and develops split ends. Our Heated Scissors, a new approach to pretty hair, is a modern technological device available in most cities now. No hairdresser needs to be told how crucial the quality of a pair of scissors is. But all the same, few have imagined a cutting tool as sharp as razors (剃须刀). What’s more, the heating element is located in the interior of the edges, with the best possible heat transference to the cutting edges. Heated cutting edges with individually adjustable temperatures seal the cuts instantly. The cut end of the hair is closed up smoothly and neatly. Right from the very first cut, the hair takes on a new look with a brilliant shine. What kind of product is advertised in the passage ______.

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