问题 单项选择题

这几年的生物科学在使“人根源于自然之中”这一点上,已成为必须正视的事实。大多数人以前有旧观念,认为我们想有主掌万物的特权,这种想法正在从根本上动摇,其实我们并不是实际存在的实体,而是被其他生命分享着、租用着、占据着。在我们细胞的内部,驱动着细胞,通过氧化方式提供能量,以供我们出门去迎接每一个朗朗白天的,是线粒体,严格地说,它们不是属于我们的,原来它们是单线的小生命,是当年移落到我们身上的殖民者原原核细胞的后裔,很有可能的是一些原始的细菌——大量地涌进人体真核细胞的远古前身在其中居留下来,从那时起,它们保住了自己及其生活方式,以自己的样式复制繁衍,其DNA(脱氧核糖核酸)和RNA(核糖核酸)都与我们的不同,它们生活我们的共生体,就像豆科植物的根一样。没有它们,我们将没法活动的一块肌肉,敲打一下指头,转动一个念头。 

我认为这些线粒体和其他以类似方式定居在我们身体细胞里的生物是为我们工作的。它们的每一气息都是为我们而呼吸的,但是否也有可能,是它们在每天早晨散布于本地的公园,感觉着我们的感受,倾听着我们的音乐,思想着我们的思想呢?我想那些绿色植物跟我们同命相怜。它们身上如果没有叶绿体,就不可能是植物,也不可能是绿色的。是那些叶绿体经营着光合工厂,生产出氧气供我们大家享用。但事实上,叶绿体也是独立的生命,有着它们自己的基因组,编码着它们自己的遗传信息。 

我们细胞核里携带的大量DNA,也许是在细胞的祖先融合和原始生物在共生中联合起来的年月里,不知什么时候来到我们这里的。我们的基因组是从大自然所有方面来的形形色色指令的集结,为应付形形色色的意外情况编码而成。就我个人而言,经过变异和物种形成,使我成了现在的物种,我对此感激不尽。不过,几年前还没有告诉我这些事情的时候,我还觉得我是个独立体,但现在却不能这样想了。 

生命同一性让很多人都吃惊的原因很可能是这样的;我们归根结底都是从一个单一细胞演化而来的。这个细胞是在地球冷却的时候,由一响雷电赋予了生命。作为一母细胞的后代,我们才成了今天的样子。我们至今还跟周围的生命有着共同的基因,而草的酶和鲸鱼的酶之间的相似,就是同种相传的相似形。

根据本文提供的信息,以下推断不正确的一项是()

A.除了线粒体以外,还有许许多多小生物在我们细胞内工作着

B.细胞的祖先在融合与原始生物共生中联合起大量的DNA

C.我们的细胞们是让我们长育成人的纯种的实体

D.叶绿体也是定居在绿色植物体内的外来生物

答案

参考答案:A

单项选择题
阅读理解

阅读表达。

     Speaking of what sort of smartness is most desirable in human conduct, a friend of mine has this to say:

Real stnartness must be something that can be practised repeatedly and infinitely. Then, he goes on to relate

this event: In one European country there resided some Lebanese. Upon learning that ambulance rides there

are provided free to patients in emergency cases, they rented an apartment near a hospital. Each time they

wanted to go home, they just pretended to be sick, calling for an ambulance. On arrival at the hospital, they

said now that they felt much better and had no need of any treatment. The next moment saw them leaving,

safe and sound, to their apartment.

     Their "being-clever" affords them only short-lived pleasure and joy; it could not he practised repeatedly,

still less infinitely. Such smartness is based on "too clever to be wise". Once seen through, they will lose the

benefits they profited by playing dirty tricks. They will suffer the impairment of their own image and reputation

as well as that of those who are tied with them by blood or by common interests.

     When a person has done something to the discredit of one's own image and reputation, it will surely involve

others related to him in one way or another. Among those inflicted most hy what folly (愚蠢) he may have

done are those who, to him, have been close in relations and dear in sentiment.

     Additionally, whether one's act is wise or unwise, rather the summit of wisdom, depends on the result of

the act; if _____, then the more often he does it, the better will he be believed. While repeating that act, he is

not only earning himself an admirable image but also contributing to the fine impression and reputation of his

relatives, his friends, his hometown and his motherland.

1. What does the passage mainly discuss? (please answer within 10 words.)

    ______________________________________________________________________________________

2. Please fill in the blank in the last paragraph with proper words or phrases to complete the sentence. (please

    answer within 10 words.) 

    ______________________________________________________________________________________

3. Which sentence in the passage can be replaced by the following one? People that have ruined their own

    images not only hurt themselves but will involve their relatives or friends. 

    ______________________________________________________________________________________

4. How would the telephone operators react to a Lebanese voice calling for an ambulance from then on? (please

   answer within 10 words.) 

    ______________________________________________________________________________________

5. Translate the underlined sentence in the last paragraph into Chinese.

    ______________________________________________________________________________________