题干

有如下VB程序段

a=12

b=54

a=b

b=a

该程序段运行后,a,b的值分别为________,该程序结构属于____结构(选填:顺序、选择、循环)。

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答案(点此获取答案解析)

54,54,顺序

同类题2

请阅读下面两则材料,提取相关信息,概括出颐和园被列入《世界遗产名录》的原因。

材料一  凡提名列入《世界遗产名录》的文化遗产项目,必须符合下列一项或几项标准方可获得批准:(1)代表一种独特的艺术成就,一种创造性的天才杰作;(2)能在一定时期内或世界某一文化区域内,对建筑艺术、纪念物艺术、城镇规划或景观设计方面的发展产生过较大影响;(3)能为一种已消逝的文明或文化传统提供一种独特的至少是特殊的见证;(4)可作为一种建筑或建筑群或景观的杰出范例,展示出人类历史上一个(或几个)重要阶段。

材料二  颐和园是中国现存规模最大、保存最完整的皇家园林,中国四大名园之一。位于北京西北郊,原名清漪园,利用昆明湖、万寿山为基址,以杭州西湖风景为蓝本,汲取江南园林的某些设计手法和意境而建成的一座大型天然山水园林,也是保存得最完整的一座皇家行宫御苑,被誉为皇家园林博物馆,堪称中国风景园林设计中的杰作。

颐和园,始建于公元1750年,时值中国最后一个封建盛世——“康乾盛世”时期;1860年的第二次鸦片战争中,清漪园被英法联军烧毁;1886年,清政府挪用海军军费等款项重修,并于两年后改名颐和园,作为慈禧太后晚年的颐养之地。从此,颐和园成为晚清最高统治者在紫禁城之外最重要的政治和外交活动中心,是中国近代历史的重要见证与诸多重大历史事件的发生地。1898年,光绪帝曾在颐和园仁寿殿接见维新思想家康有为,询问变法事宜;变法失败后,光绪被长期幽禁在园中的玉澜堂;1900年,八国联军入侵北京,颐和园再遭洗劫,1902年清政府又予重修。

同类题3

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。有两个选项为多余选项。

    The Internet has opened up a whole new online world for us to meet, chat and go where we've never been before.

    But just as in face to face communication, there are some rules of behavior that should be followed when on line. ____ Imagine how you'd feel if you were in the other person's shoes.

    For anything you're about to send: ask yourself, “Would I say this to the person's face? If the answer is no, rewrite and reread. ____

    If someone in the chat room is rude to you, your instinct (本能 ) is to fire back in the same manner. But try not to do so. ____ If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect opinions of others in the chat room.

    ____ Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake, whether it's a stupid question or an unnecessarily long answer, be kind about it. If it is a small mistake, you may not need to say anything. Having good manners yourself doesn't give you license to correct everyone else. ____ At the same time, if you find you are wrong, be sure to correct yourself and apologize to those you have offended.

A. Everyone was new to the network once.

B. If you do decide to tell someone about a mistake, point it out politely.

C. It's unusual that there are some people who speak rudely or make mistakes online.

D. The basic rule is simple: treat others in the same way you would want to be treated.

E. You should either ignore the person, or use your chat software to block their messages.

F. When you send short messages to a person online, you must say something beautiful to hear.

G. Repeat the process till you feel sure that you'd feel comfortable saying the words to the person's face.