Question

7．DNA的发现是近百年来最重要的发现之一，它已经且将继续影响人们的生活．请根据下列要求，写一篇短文．内容包括：
1．举例说明带来的好处；
2．举例说明可能造成的弊端；
3．谈谈你的看法．
注意：词数100左右．
As we know，the discovery of DNA has been called the most important biological work of the last 100 years．（高分句型一）
　　We have already experienced the benefits in many ways．To give a few examples，the police can catch the criminal by comparing DNA samples．Scientists can insert new genes into unborn babies to cure diseases．Besides，we can improve the crops and increase output，which can help avoid world food crisis．（高分句型二）
　　On the other hand，if improperly used，it may bring us a lot of disadvantages．If we start choosing the gender of the baby，what might the consequences be？What‘s more，Some food，developed through this technology，may have side effects on people's health．（高分句型三）
　　Genetics is a science that will continue to have an enormous influence on our lives．We should use it to make our lives better．．

Answer 1

分析 本篇书面表达属于提纲类作文，根据提示信息DNA的发现是近百年来最重要的发现之一，它已经且将继续影响人们的生活．请根据下列要求，写一篇短文，写作时注意以下几点：1、仔细阅读有关提示，弄清试题提供的所有信息，要点包括：举例说明带来的好处；举例说明可能造成的弊端；谈谈你的看法2、提纲是文章的总体框架，要在提纲的范围内进行分析、构思和想象．要依据提示情景或词语，按照一定逻辑关系来写．本文写作时可以按照要点所给的顺序写．3、根据要表达的内容确定句子的时态、语态．4．注意使用高级词汇和句式，以增加文章的亮点．
【亮点说明】本文结构紧凑，层次分明，而且使用了多种表达：As we know众所周知；Besides，另外；On the other hand另一方面；What‘s more而且；have side effects on对…由副作用；
  As we know，the discovery of DNA has been called the most important biological work of the last 100 years．（高分句型一）
Besides，we can improve the crops and increase output，which can help avoid world food crisis．（高分句型二）
What‘s more，Some food，developed through this technology，may have side effects on people's health．（高分句型三）

解答 As we know，the discovery of DNA has been called the most important biological work of the last 100 years．（高分句型一）
 　  We have already experienced the benefits in many ways．To give a few examples，the police can catch the criminal by comparing DNA samples．Scientists can insert new genes into unborn babies to cure diseases．Besides，we can improve the crops and increase output，which can help avoid world food crisis．（高分句型二）
　　On the other hand，if improperly used，it may bring us a lot of disadvantages．If we start choosing the gender of the baby，what might the consequences be？What‘s more，Some food，developed through this technology，may have side effects on people's health．（高分句型三）
　　Genetics is a science that will continue to have an enormous influence on our lives．We should use it to make our lives better．

点评 英语写作是一项主观性较强的测试题．它不仅考查学生的写作基础而且还考查学生在写作过程中综合运用语言的能力．在撰写时要注意主谓语一致，时态呼应，用词贴切等．要提高英语写作水平，需要两方面的训练：一是语言基础方面的训练，要有扎实的造句、翻译等基本功，即用词法、句法等知识造出正确无误的句子；二是写作知识和能力 方面的训练以掌握写作方面的基本方法和技巧．