U6 训练 3 DNA is fantastic!-【初中必刷题】2026-2027学年九年级上册英语同步课件（冀教版·新教材）

该初中英语课件围绕九年级Unit 6“DNA is fantastic!”科普主题，通过“刷基础、刷语法、刷能力”分层次设计，从词汇（如repeated, complicated）、语法（一般将来时被动语态）到语篇理解（完形、阅读），构建连贯学习支架，帮助学生逐步掌握相关知识。 其亮点在于题型全覆盖与解析精准化，如被动语态题结合“主将从现”原则详解，完形填空提供“通读-细读-思考-复查”技巧，助力语言能力提升与思维品质培养。科普语篇（如DNA提取实验）激发兴趣，分层次训练培养学习能力，既帮助学生巩固基础、提升综合素养，也为教师提供系统教学资源，提高教学效率。

英 语 九年级全一册 JJ 1 2 3 九年级上册 Unit 6 Looking into science 4 A 课时同步训练 3 DNA is fantastic! 5 刷基础 刷语法 刷能力 6 基础 Ⅰ 根据句意及汉语或首字母提示填写单词 1.【2026河北承德期中】I have __________ （重复） this experiment several times, but I still haven’t got the expected results. 2.For beginners, this maths problem is too _____________________ （复杂的） to work out. 3.【2026河北沧州质检】Lucy and Lily look exactly the same—they are t ______sisters. 4.It’s not easy to i _________the differences between these two similar pictures. 5.As the saying goes, “A distant r _________ is not as good as a near neighbour.” repeated complicated/complex twin dentify elative 刷基础 返回目录 7 Ⅱ 根据汉语意思完成句子（每空一词） 6.除了几处拼写错误外,这篇英语作文写得相当不错。 ___ ____ a few spelling mistakes, this English composition is quite well-written. 【答案】Except for/Apart from 7.【2026河北邢台调研】在小组讨论中,我们应该积极与同伴交流、分享想法。 We should actively ______________________ ______ our partners and share ideas during group discussions. interact/communicate with 刷基础 返回目录 8 8.在未来几年里,这部经典小说将被剪辑改编成一部动画电影。 ____ _____ ________ _______, this classical novel ______ ____ ____________ and adapted into an animated film. In the coming years will be edited/cut 9.【2026河北唐山期中】你打算如何处理这些毕业之后留下来的旧校服？ What are you going to ____ ______ these old school uniforms left after graduation? do with 刷基础 返回目录 9 语法 Ⅰ 用括号内所给单词的适当形式填空 1.【2026河北廊坊调研】Don’t worry. Actions _______________ （take） at once by us if you ask us for help. will be taken 【解析】根据by us可知，此处用被动语态；含if引导的条件状语从句的复合句时 态遵循“主将从现”的原则，从句用一般现在时，主句用一般将来时，故填will be taken。 刷语法 返回目录 10 2.【2026河北承德期中】Who ________________ （choose） to play the lead role in the next film hasn’t been decided. will be chosen 【解析】根据语境可知，Who和choose之间是被动关系，且时态是一般将来时，故 填will be chosen。 3.—How many groups ______ the students ____________ （divide）into in tomorrow’s competition？ —Maybe five. will be divided 【解析】根据in tomorrow’s competition可知，此处时态为一般将来时，且主 语the students和动词divide之间为被动关系，应用一般将来时的被动语态；此 句为特殊疑问句，应将助动词will提到主语前。 刷语法 返回目录 11 4.The sports meeting they are looking forward to ______________ （hold） in three days. will be held 【解析】根据定语从句they are looking forward to并结合时间状语in three days可知，句子时态用一般将来时，且主语The sports meeting和hold之间是被 动关系，所以要用一般将来时的被动语态，故填will be held。 5.The book ____________________ （translate） into over 30 foreign languages in the future. will be translated 【解析】根据in the future可知句子时态是一般将来时，主语The book与 translate之间是被动关系，故填will be translated。 刷语法 返回目录 12 Ⅱ 短文填空 阅读下面短文,在空白处填入一个适当的单词或填入括号内单词的正确形式。 ［2026原创］DNA is one of the 6. ______________ （amaze） things in the world, and it exists in every 7. ________ （live） being on Earth, from tiny insects to huge animals. It 8. __________ （strong） influences our appearance, such as hair colour and 9. ________ （high）, and even influences our personalities. Many of us have noticed that we share similar features with our 10. ___________ （relative）.That’s because 11. _________ （gene） information in most amazing living strongly height relatives genetic 刷语法 返回目录 13 DNA passes from parents 12. ____ children. Scientists have found that some parts of DNA can 13. _____________ （repeat） thousands of times, which makes each person’s DNA unique. In the past, people 14. ______ （know） little about DNA, and no one imagined it could change the world.15. _____ now, we use it widely in many fields like medicine and agriculture. In 16. _____ coming years, more hidden secrets of DNA 17. __________________ （explore） by researchers. And new technologies 18. _______ （base） on DNA will be created to help humans solve 19. ______ （many） difficult problems than before. Without doubt, DNA will always play a key role 20. ____ our lives.#1.1.2 短文填空·语篇导读 本文主要介绍了DNA。 to be repeated knew But the will be explored based more in 刷语法 返回目录 6. ______________ most amazing 【解析】“one of + the + 形容词最高级 + 可数名词复数”是固定结构，此处 修饰things，故填most amazing。 7. ________ living 【解析】此处修饰名词being，应用形容词，living being为固定搭配。故填 living。 8. __________ strongly 【解析】分析句子可知，此处修饰动词influences，应用副词。故填strongly。 刷语法 返回目录 15 9. ________ height 【解析】由空前的hair colour可知，此处应用high的名词形式height，与hair colour并列。故填height。 10. ___________ relatives 【解析】relative是可数名词，此处泛指“亲戚们”，应用复数形式relatives。 故填relatives。 11. _________ genetic 【解析】此处修饰名词information，应用gene的形容词形式genetic。故填 genetic。 刷语法 返回目录 16 12. ____ to 【解析】“from… to…”意为“从……到……”，为固定搭配。故填to。 13. _____________ be repeated 【解析】some parts of DNA与repeat之间是被动关系，应用被动语态，由空前的 can可知填be repeated。 14. ______ knew 【解析】由时间状语In the past可知，时态为一般过去时，故填knew。 刷语法 返回目录 17 15. _____ But 【解析】分析上下文可知，前后内容存在转折关系。设空位于句首，故填But。 16. _____ the 【解析】in the coming years是固定短语，故填the。 17. __________________ will be explored 【解析】由时间状语“In… coming years”可知，时态为一般将来时，主语more hidden secrets of DNA与explore之间是被动关系，应用一般将来时的被动语态， 故填will be explored。 刷语法 返回目录 18 18. _______ based 【解析】（be） based on是固定短语，意为“基于……”，此处用过去分词短语 作后置定语，故填based。 19. ______ more 【解析】根据than before可知此处应用形容词比较级作定语，故填more。 20. ____ in 【解析】“play a role in…”为固定用法，故填in。 刷语法 返回目录 19 能力 Ⅰ 完形填空 体裁：说明文 题材：科普知识与现代技术 词数：191 难度:★★★ 建议用时：7分钟#1 【2026河北保定期中】There is an interesting finding!Our DNA can help us . .1. . whether we prefer coffee or tea. Scientists in Australia studied . .2. . question（s）.First, how do our genes affect our . .3. .？Second, why do we like some tastes more than others？ Following the study, scientists understood why some of us prefer coffee . .4. . 刷能力 返回目录 20 others like tea more. The reason is simple. People who enjoy bitter tastes are more . .5. . to drink coffee. Scientists noticed that some people were sensitive （敏感的） to the bitter taste of caffeine （咖啡因）, so they were more likely to prefer coffee to tea. Scientists . .6. . the data （数据） from many countries. They also found that genes aren’t the only factor affecting people’s tastes. Other things like our changing environment, social . .7. . or the effects of taking medicine can also turn us on or off coffee or tea. The researchers said we can learn to like coffee, because our favourite taste is . .8. . not only by genes, but also environmental reasons. Although humans naturally . .9. . bitterness, we can learn to enjoy bitter- tasting food . .10. . the environment.#4 刷能力 返回目录 完形填空·语篇导读 本文介绍了一个有关DNA的有趣发现。 高分技巧 完形填空题的解题技巧 通读全文，了解大意 → 细读文章，先做易题 → 仔细思考，攻破难题 → 再读 文章，确定最终答案。 刷能力 返回目录 22 1.( ) A.guess B.make C.decide D.get C 【解析】句意为：我们的DNA能帮助我们决定更喜欢咖啡还是茶。结合语境可知此 处指DNA会影响人们的偏好，故选C项。 2.( ) A.one B.two C.three D.four B 【解析】句意为：澳大利亚的科学家研究了两个问题。根据下文的First和Second 可知，科学家研究了两个问题。故选B项。 3.( ) A.smells B.tastes C.feelings D.looks B 【解析】句意为：首先，我们的基因如何影响我们的口味？结合下文why do we like some tastes more than others可知，此处指“口味”，故选B项。 刷能力 返回目录 23 4.( ) A.but B.because C.so D.or A 【解析】句意为：研究之后，科学家们明白了为什么我们有些人更喜欢咖啡，而 其他人更喜欢茶。前后文是转折关系，故选A项。 5.( ) A.likely B.simply C.easily D.certainly A 【解析】句意为：喜欢苦味的人更有可能喝咖啡。be likely to do sth为固定搭 配，意为“有可能做某事”，符合语境。故选A项。 6.( ) A.gave B.showed C.collected D.protected C 【解析】句意为：科学家们从许多国家收集了数据。结合the data from many countries可知，此处指“收集数据”，故选C项。 刷能力 返回目录 24 7.( ) A.evidence B.details C.scenery D.factors D 【解析】句意为：其他因素，诸如变化的环境、社会因素或服药的影响，也可能 让我们喜欢或不喜欢咖啡或茶。根据前文genes aren’t the only factor可知， 此处列举的是其他“因素”，故选D项。 刷能力 返回目录 25 8.( ) A.decided B.covered C.booked D.put A 【解析】句意为：研究人员说我们可以学会喜欢（喝）咖啡，因为我们最喜欢的 口味不仅由基因决定，还由环境原因决定。结合第一段第二句及genes aren’t the only factor可知，口味是由基因和环境“决定”的，decided符合语境。故 选A项。 知识拓展 decide to do sth决定做某事 decide on sth选定/决定某事 刷能力 返回目录 26 9.( ) A.like B.reject C.practice D.accept B 【解析】句意为：虽然人类天生排斥苦味，但由于环境，我们可以学会享受苦味 食物。根据语境及常识可知，人类天生是不喜欢苦味的，故选B项。 10.( ) A.rather than B.instead of C.because of D.so that C 【解析】前后内容是因果关系，即因为环境的影响才学会享受苦味，故选C项。 刷能力 返回目录 27 Ⅱ 阅读理解 体裁：应用文 题材：科普知识与现代技术 词数：229 难度:★★★ 建议用时：7分钟#1 素材话题：如何提取DNA#2 【2026河北石家庄期中】#3 DNA is a special part inside every cell （细胞）.It tells the cell what to be—part of a human, an animal, or a plant. Here’s a way to see your own DNA! 刷能力 返回目录 28 What you’ll need ◆ A clear glass ◆ A spoon ◆ Salt ◆ Dish soap （洗洁精） ◆ Isopropyl alcohol （异丙醇） The most important!Ask adults to help deal with alcohol!! What to do Put on your safety glasses—we’re about to do some chemistry! ※Put a half spoon of salt into a glass half full of water. 续表 刷能力 返回目录 29 ※Take a mouthful of the salt water and keep it in your mouth for a minute, but don’t swallow （吞咽） it. Pour the salt water back into the glass. The mixture now has some cells from your mouth! ※Add one drop of dish soap to the salt water mixture and mix it gently. Try not to make suds （肥皂泡沫）. ※Next, ask an adult to slowly pour some drops of isopropyl alcohol down the side of the glass so that it sits on top of the salty soapy water. Don’t shake. 续表 刷能力 返回目录 30 ※In about a minute you will see tiny white thread-like （线形的） things forming on top of the alcohol. This is your DNA! _______________________________________________________________ 阅读理解·语篇导读 本文介绍了如何通过实验看到自己的DNA。 续表 刷能力 返回目录 31 11.Which is the most important when doing the experiment？( ) D A.A clear glass. B.A spoon. C.Dish soap. D.An adult’s help. 【解析】细节理解题。根据“The most important!Ask adults to help deal with alcohol!!”可知，实验中最关键的是需要成人的协助。故选D项。 刷能力 返回目录 32 12.Why do we need to keep salt water in the mouth for a minute？( ) B A.To make the salt water taste better. B.To get some cells from the mouth. C.To swallow the salt water easily. D.To create suds in the glass. 【解析】推理判断题。根据“Take a mouthful of the salt water and keep it in your mouth for a minute… The mixture now has some cells from your mouth!”可知，把盐水含在嘴里是为了收集细胞。故选B项。 刷能力 返回目录 33 13. 顺序排列 What is the correct order of seeing your DNA？( ) A ① ② ③ ④ ⑤ A.①⑤②③④ B.①②③⑤④ C.①②④⑤③ D.②④①③⑤ 【解析】细节理解题。根据文章内容可知，实验步骤为：将盐加入水中（图①）； 把盐水含在嘴里并吐回杯中（图⑤）；加入洗洁精（图②）；让成人倒入异丙醇 （图③）；观察DNA（图④）。故选A项。 刷能力 返回目录 34 Ⅲ 阅读表达 体裁：说明文 题材：科普知识与现代技术 词数：222 难度:★★★ 建议用时：7分钟#1 【2026河北邯郸期中】Animal waste is becoming a treasure!Scientists find a special way to use animal poop （粪便）.They call their project “Poo Zoo”.This project is really helpful to protect wildlife. Animal poop has living cells with DNA.The DNA gives us important information for wild animal breeding programs （繁育计划） and protection. This is very important as the number of wildlife is quickly dropping. 刷能力 返回目录 35 Usually, getting a piece of skin from wildlife to study is hard. People have to catch the animals and make them sleep. This not only takes a lot of time but also can be bad for the animals. Professor Suzannah Williams from the University of Oxford created the “Poo Zoo” project. The idea is to collect living cells from animal poop and grow the cells in labs. Starting with mouse poop, the team tried many ways to collect the cells and keep them fresh. After improving their skills, scientists turned to elephant poop. They cleaned the poop carefully and took out the living cells. Professor Williams 刷能力 返回目录 told reporters that the team successfully collected living elephant cells many times. However, it’s not easy to make life from these living cells now.“Poop has a lot of bacteria （细菌）, so scientists need a better way to grow healthy cells,” said Vice.#1.1.5 阅读表达·语篇导读 本文介绍了“便便动物园”项目。 刷能力 返回目录 14.What can the “Poo Zoo” project help do？ _______________________________________________________________________ 【解析】根据第一段最后一句可知，“便便动物园”项目有助于保护野生动物。 15.What is the DNA from animal poop used for？ _______________________________________________________________________ 【解析】根据第二段第二句可知，粪便中的DNA为野生动物繁育计划和保护提供重 要信息。 16.From which animals’ poop did scientists collect living cells？ _______________________________________________________________________ _______________________________________________________________________ 【解析】根据第五段可知，科学家从老鼠和大象的粪便中收集了活细胞。 It can help protect wildlife. It is used for wild animal breeding programs and protection. Scientists collected living cells from mouse poop and elephant poop. 刷能力 返回目录 38 17.Why is it difficult to make life from these living cells now？ _______________________________________________________________________ 【解析】根据第六段可知，因粪便含大量细菌，目前用这些细胞创造生命还很困难。 18.What do you think of this project？And why？ _______________________________________________________________________ _______________________________________________________________________ 【解析】开放性试题，言之有理且无语法错误即可。 温馨提示 without doing sth不做某事 Because poop has a lot of bacteria. I think it is creative and meaningful because it provides a safe way to study animals without hurting them. 刷能力 返回目录 39 $