问题 单项选择题

下面关于计算机病毒的叙述中,不正确的是

A.计算机病毒有破坏性,凡是软件能用到的计算机资源,都有可能受到病毒的破坏

B.计算机病毒有潜伏性,它可能长期潜伏在合法的程序中,遇到一定条件才开始进行破坏活动

C.计算机病毒有传染性,它能不断扩散,这是计算机病毒最可怕的特性

D.计算机病毒是开发程序时未经测试而附带的一种寄生性程序,它能在计算机系统中存在和传播

答案

参考答案:D

解析:解析:计算机病毒是指能够侵入计算机系统并在计算机系统中潜伏,传播,破坏系统正常工作的一种具有繁殖能力的程序。它不是开发程序时未经测试而附带的一种寄生性程序。

阅读理解

Most of us are the only child in the family! We have no little brother or big sister . Our family consists of our mom , our dad and us . We are growing up in a world greatly different from our parents’ . Yet we will be the future leader of China. We will someday have to work together and carry China into the beautiful future . So , we must learn to love each other like brothers and sisters !

It’ s hard to think about how different life would be if we had a brother or a sister . We never have to share anything at home ! of course , we might have cousins, but we don’ t have to live with them ! Our parents try to give us the best , and the best doesn’t need sharing between two or three children . Do we ever ask ourselves if we are spoiled(宠坏)?

Someone thinks that we are spoiled because we don’t know the value of money, because we don’ t know how hard our parents work but mainly because we many children don’ t know how to love ! We don’ t want others to regard us as spoiled , do we ? Well, why not start now to help our parents at home or share a game with one of our friends? In a word, We must learn to love each other !

小题1:How many people are there in most families in modern China ?

A.Three

B.Five

C.Six

D.Seven小题2:As Chinese teenagers , what’ s our duty in the future ?

A.To look after brother and sisters .

B.To help parents do the housework .

C.To carry china into the beautiful future .

D.To save more money .小题3:As the only child in the family , we share the best things with _____ .

A.our cousins

B.our brothers and sisters

C.anyone

D.nobody小题4:What’ s the main reason that someone thinks we are spoiled ?

A.That we don’ t know how to love .

B.That we don’ t know how to use money .

C.That we only share games with our friends .

D.That we don’ t know hard our parents work .小题5:The passage mainly tells us _____ .

A.we should help our parents

B.we should learn to love each other

C.we should have brothers and sisters

D.we should be kind to our classmates

填空题