Question

【题目】阅读下面材料，在空白处填入适当的内容(1个单词)或括号内单词的正确形式。

It is suggested that extinct animals can possibly come back to life through cloning sometimes, but 【1】 (fortune), this is either impossible 【2】 unsuitable. The reasons are as follows：

【3】 is required is that you need perfect DNA and enough 【4】 (diverse) in the group to overcome illnesses, which means having animals with their genes 【5】 (arrange) in different ways. The advantage is 【6】 if there is a new illness some of these animals may die, but others will survive. A suitable habitat would 【7】 (need) for the extinct animals to lead a natural life, so it would be 【8】 (fair) to clone any of them if they were to live in a zoo.

【9】 (base) on the reasons above, we are a long way from being able to clone extinct animals, so the chance of dinosaurs ever returning to the earth is 【10】 (mere) a dream.

Answer 1

【答案】

【1】unfortunately

【2】or

【3】What

【4】diversity

【5】arranged

【6】that

【7】be needed

【8】unfair

【9】Based

【10】merely

【解析】

试题分析：据建议灭绝的动物很可能回归，但是这既不合适也不可能，本文讲了几个理由。

【1】unfortunately fortune是名词，副词修饰整个句子，再根据语境可知用其否定形式，故填unfortunately。

【2】or either...or...或者……或者……，是固定句型，故填or。

【3】What 句意：你需要完美的DNA和足够的差异来克服疾病。此处是主语从句，缺少主语和引导词，故填What。

【4】diversity 句意：你需要完美的DNA和足够的差异来克服疾病。enough在这里是形容词，修饰名词，故填diversity。

【5】arranged genes和arrange之间是被动关系，故用过去分词，故填arranged。

【6】that 句意：好处是如果有一种新的疾病，这些动物中的一些可能死，但是其他的可能会生存下来。此处是that引导的表语从句，不作成分，只起引导作用，故填that。

【7】be needed 句意：一个合适的栖息地被需要因为这些灭绝的动物要过自然的生活。含情态动词的被动语态，故填be needed。

【8】unfair 句意：克隆他们当中的任何一个如果它们将生活在动物园是不公平的。故此处填unfair。

【9】Based be based on以……为基础。此处是过去分词作状语，故填Based。

【10】merely 句意：恐龙曾经回归地球的机会只是一个梦想。副词修饰整个句子，故填merely。

【知识归纳】

1. be based on以……为基础；be dressed in 穿着，戴着；be satisfied with对……感到满意；be faced with面临着……；be located in/on...坐落在……。

2.以e结尾的形容词变成副词时，有的直接加ly；有的把e去掉再加ly。

possible—possibly；simple—simply；gentle—gently；terrible—terribly；true—truly；flexible—flexibly；immediate—immediately；brave—bravely；wise—wisely；active—actively；unfortunate—unfortunately