Question

【題目】Do you know about DNA? Here is an introduction of it.

DNA is short for deoxyribonucleic acid. It contains genetic instructions. These instructions are used in the development and functioning of all known living organisms(有機體). That's to say that your DNA decides what you are like. Perhaps this is a little bit difficult for you to understand. Here is an example to explain it more clearly. Before you were born, your DNA had already decided you would have two hands and that each hand would have five fingers. Your_hands_would_help_you_hold_things_and_do_many_other_things.

However, DNA is more than that. We get our DNA from our father and mother. That is why we look like our parents and are not like others'. Also because of different DNA, Chinese people look different from Americans. Chinese people have black hair and eyes, but many Americans have blue eyes and blond hair. Though we have discussed many things about DNA here, there is still a lot more to know about it. If you would like to know more about DNA, you should go on the Internet. Perhaps the website will help you.

(1、2題完成句子；3題簡略回答問題；4題寫下全文的主題句；5題將文中畫線句子譯成漢語。)

【1】Americans look different from Chinese because ________________．

【2】Your DNA decides ________________．

【3】Whom do we get our DNA from?

________________________________________________________________________

【4】________________________________________________________________________

【5】________________________________________________________________________

Answer 1

【答案】

【1】they have different DNA

【2】what you are like

【3】Our father and mother./Our parents.

【4】Here is an introduction of DNA.

【5】你的手會幫你拿東西和做許多其他的事情。

【解析】

短文向我們介紹了什么是DNA，DNA是脫氧核糖核酸的縮寫。它包含遺傳指令。這些指令用于所有已知生物的發(fā)育和功能。我們每個人都可以從父母那里得到DNA。因此子女會像自己的父母，由于DNA的不同，中國人看起來也不同于美國人。

【1】根據(jù)短文中的句子“Also because of different DNA, Chinese people look different from Americans.” 因為DNA的不同，中國人看起來不同于美國人。because后跟原因狀語從句，美國人看起來不同于中國人，因為他們有不同的DNA。故答案為they have different DNA 。

【2】根據(jù)短文中的句子“That's to say that your DNA decides what you are like.”可知，你的DNA決定了你的長相，故答案為what you are like。

【3】根據(jù)短文中的句子“We get our DNA from our father and mother.”可知，我們的DNA是從父母那里獲取的，故答案為Our father and mother./Our parents.

【4】短文簡要地向我們介紹了什么是DNA，DNA遺傳于我們的父母，引導(dǎo)生物的生長發(fā)育。故Here is an introduction of DNA.是本文的主題句。

【5】would將要，將會；help sb. do sth.幫助某人做某事；hold things拿東西；do many other things做許多其它的事情。故答案為：你的手會幫你拿東西和做許多其他的事情。