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问题 填空题

Unix系统结构由两部分组成：一部分是内核，另一部分是_________。

答案

参考答案：核外程序

解析：在系统结构上，Unix 可分为两大部分：一部分是操作系统的内核，另一部分是核外程序。内核部分 由文件子系统和进程控制子系统组成；核外程序则由用户程序和系统提供的服务组成。

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阅读下文并回答问题。

The word “day” has two meanings. When we talk about the number of days in a year, we are using “day” to mean 24 hours. But when we talk about day and night, we are using “day” to mean the time between sunrise and sunset. Since the earth looks like a ball, the sun can shine on only half of it at a time. Always one half of the earth is having day and the other half night. A place is moved from day into night and from night into day over and over by the spinning(旋转) of the earth. At the equator(赤道) day and night are sometimes the same length. They are each twelve hours long. The sun rises at 6 o’clock in the morning and sets at 6 o’clock in the evening. For six months the North Pole is tilted(倾斜) toward the sun. In those months the Northern Hemisphere(半球) gets more hours of sunlight than the Southern Hemisphere. Days are longer than nights. South of the equator nights are longer than days. For the other six months the North Pole is tilted away from the sun. Then the Southern Hemisphere gets more sunlight. Days are longer than nights. North of the equator nights are longer than days. Winter is the season of long nights. Summer is the season of long days.

小题1:How many meanings does the word “day” have?

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小题2:At the equator(赤道)，are day and night sometimes the same length?

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小题3:By what of the earth is a place moved from day into night and from night into day over and over？

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选择题

下列各项划线的成语使用恰当的一项是（  ）

A．汉 * * 李某，抗战开始不久就向日寇暗送秋波，后来干脆卖身投靠，公开作了日寇的走狗。

B．暑假期间，我和家人去挪威度假，那里空气清新、阳光和煦，真是一个让人安之若素的好地方。

C．做事情一定要有大局观，放眼于整体，绝对不能目无全牛。

D．张大千是近代以来最杰出的画家之一，他挥笔作画，往往向壁虚构，很多寺院的墙壁上都有他的画作。
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