问题 单项选择题

阅读下面一段说明文,完成下列问题
什么是星云过去人们往往把天空中一切云雾状的天体都说成是星云。其实,离我们非常遥远的位于银河系以外的云雾状天体,并不是星云,而是与银河系类似的庞大的恒星系统。根据它们的外貌,人们有时也称其为河外星云,即银河系以外的星云。不过,实际上还是应当如实地把它们称为河外星系。河外星系的发现使我们知道,在天文学史上早期所发现的“星云”中,只有一部分是真正的星云。星云不但应当看起来是云雾状的,而且应当是真正由气体和尘埃组成的云雾状物质。这样的星云广泛地存在于银河系和河外星系之中。而我们现在所能看到的只局限于银河系的星云,即所谓银河星云。它的类型不同。形状不一,大小不等。其中有一种叫弥漫星云,具有不规则的形状,一般没有明确的边界。我们的太阳系就是在弥漫星云中形成的。但是,直接形成太阳系的,并不是整个的弥漫星云,而是由弥漫星云分解而成的星云块,即所谓球状体。形成太阳系的那个球状体,我们称它为太阳星云。

文中“人们也称其为河外星云”的“其”字指代的是:

A.银河系以外的云雾状天体

B.庞大的恒星系统

C.银河系以外的星云

D.河外星系

答案

参考答案:A

解析:[详解] 判断本句时,重点注意“根据它们的外貌”一句,特别是“外貌”一词可以断定 B是错的,因为B是本质,不是“外貌”。C、D均是“其”之后出现的答案,在逻辑上不成立。

翻译题

阅读下面的短文,将划线部分的句子译成英文或中文。

     Food is very important. Everyone needs to eat well if he or she wants to have a strong body. 1.Our

minds also need a kind of food. This kind of food is knowledge. We begin to get knowledge even we are

very young. 2.孩子们对他们周围的一切都感兴趣. They learn something when they are watching and

listening. When they are getting older, they begin to read storybooks, science books and anything they like.

3.When they find something new, they love to ask questions and try to find out the answers

     4.获取知识的最佳方法是什么呢? If we learn by ourselves, we will get the most knowledge. If we

are always getting answers from others and do not ask why, we will never learn well. 5.If we study in the

right way, we will learn more and understand better.

1.                                                                                           

2.                                                                                           

3.                                                                                           

4.                                                                                           

5.                                                                                           

单项选择题