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(jī)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 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，we Chinese look different from Americans．We 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 can go on the Internet．
完成句子
（1）Americans look different from Chinese because they have different DNAthey have different DNA．
簡略回答問題
（2）What does DNA contain？ It contains genetic instructions．It contains genetic instructions．．
將文中橫線處所缺單詞寫在下面的橫線上
（3）getget．
寫下本文的主題句
（4）Here is an introduction of DNA．Here is an introduction of DNA．．
將文中畫線句子譯成漢語
（5）你的手會(huì)幫助你抓住東西并且做許多其他的事情．你的手會(huì)幫助你抓住東西并且做許多其他的事情．．
【考點(diǎn)】人與社會(huì)．
【答案】；they have different DNA；It contains genetic instructions．；get；Here is an introduction of DNA．；你的手會(huì)幫助你抓住東西并且做許多其他的事情．
【解答】
【點(diǎn)評】
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發(fā)布：2024/6/27 10:35:59組卷：15引用：1難度：0.9
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●（3）
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（4）
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2．Hi，Judy，
Thanks for your e-mail.It's great to hear about your life in Beijing.
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