问题 判断题

没有可遗传的变异就没有生物的进化

答案

题目分析:遗传和变异是自然选择的物质基础,是生物进化的前提之一,自然选择是建立在遗传和变异的基础上的,没有变异就不存在生物的多样性,也就没有选择的对象,就没有生物的进化,如果没有遗传,生物不能延续繁衍,自然选择也就失去了意义,正因为生物具有遗传和变异的特点,自然选择才能成为推动生物进化的动力,生物的变异在生物进化上的意义是,可遗传的有利变异会出现新的生物类型,使生物能由简单到复杂、由低等到高等不断进化,故题干的叙述是正确的。

选择题
写作题

第二节读写任务(共1小题,满分25分)

阅读下面的短文,然后按照要求写一篇150词左右的英语短文。

Every activity of our lives is communication of a sort, but it is through speech that man asserts his distinctness from other forms of life. He alone, of all animals, has the gift of verbal communication and it is through the quality of his speech that he best expresses his own individuality , his essence. When he is unable to say clearly what he means, through either nervousness, timidity, or foggy thought-processes, his personality is blocked off, dimmed out, and misunderstood.

Business, social, and personal satisfaction depend heavily upon a person’s ability to communicate clearly to his fellow men what he is, what he desires, and what he believes in. And now, as never before , in an atmosphere of international tensions, fears, and insecurities, we need the channels of communication between peoples kept open. It is my hope that The Quick and Easy Way to Effective Speaking will be helpful in all these ways, both to those who wish simply to function with greater ease and self-confidence in practical pursuits, and to those who wish to express themselves more completely as individuals seeking a deeper personal fulfillment.

--- Dorothy Carnegie,Introduction to The Quick and Easy Way to Effective Speaking

【写作内容】

1.用大约30个词概括原文内容。

2.然后用大约120个词表达自己对“沟通”的看法,内容包括:

(1)人们之间沟通的重要性

(2)用自己或他人的事例说明缺乏沟通可能造成误解甚至损失。

【写作要求】

1.作文中可使用自己亲身经历或虚构的故事支持你的观点,也可以参照阅读材料的内容,

但不得直接引用原文中的句子;

2.作文中不能出现真实姓名和学校名称。

【评分标准】概括准确,语言规范,内容合适,篇章连贯。