问题 单项选择题 案例分析题

2006年8月24日,在捷克首都布拉格举行的国际天文学联合会大会上通过的行星新定义中,冥王星终于“惨遭降级”,被驱逐出了行星家族,被列为“矮行星”。据此回答问题。

下列天体系统中,不含有冥王星的是()

A.太阳系

B.银河系

C.总星系

D.河外星系

答案

参考答案:D

解析:

天体之间相互吸引、相互绕转,构成不同级别的天体系统,天体系统按层次大小可分为:总星系(即目前所知的宇宙范围),银河系和河外星系(河外星系简称星系),银河系又向下分成太阳系及其他恒星系,太阳系向下分成最低一级的地月系和其他行星系,冥王星属于太阳系,属于银河系。河外星系是银河系以外的星系,所以不包含冥王星,故本题选D。

考点:本题主要考查宇宙中的地球。

阅读理解

The Internet has opened up a whole new on-line 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 basic rules of behavior that should be followed when online. The basic rule is simple: treat others in the same way you would want to be treated.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.Repeat the process till you feel sure that you'd feel comfortable saying the words to the person's face.

If someone in the chat room is rude to you, your instinct is to fire back in the same manner. But try not to do so. You should either ignore the person, or use your chat software to block their messages. If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room.

Everyone was new to the network once. 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's a small mistake, you may not need to say anything. Even if you feel strongly about it, think twice before saying anything. Having good manners yourself doesn't give you license to correct everyone else.

If you do decide to tell someone about a mistake, point it out politely. At the same time, if you find you are wrong, be sure to correct yourself and apologize to those that you have offended.

It is not polite to ask others personal questions such as their age, sex, and marital status. Unless you know the person very well, and you are both comfortable with sharing personal information, don't ask such questions.

小题1:When you send short messages to a person, you must _____.

A.make sure that they mean no harm

B.read them again and again

C.say something good to hear

D.repeat them later to the person's face小题2:If you are hurt in the chat room by others, you should _____

A.fight back in the same way

B.take them seriously

C.have none of them

D.be angry at them小题3:If a newcomer who communicates on line makes any mistakes, you _____.

A.should point them out sharply

B.shouldn’t give any advice unless required by them

C.should say something about them

D.should take your responsibility to correct them小题4:This passage mainly tells us ______.

A.some rules of Internet communication.

B.ways of sending messages

C.rules of the chat room

D.ways of making friends on the Internet

名词解释