化学反应小苏打

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39696. （2022•铁一中学•九上一月） $德优题库$ Blowing Up Balloons with CO₂Chemical reactions （化学反应） make for some great experiments.You can make use of the CO₂ （carbon dioxide） given off by a baking soda （小苏打） and lemon juice reaction to blow up your balloon!
   What you'll need：
   ★ Balloon
   ★ About 40 ml of water （a cup is about 250 ml so you don't need much）
   ★ Soft drink bottle
   ★ Juice from a lemon
   ★ 1 teaspoon of baking soda
   Instructions：
   Before you begin，make sure that you pull the balloon long to make it as easy as possible to blow up.
   ★ Put the 40 ml of water into the soft drink bottle.
   ★ Add the baking soda and mix it with water.
   ★ Put the lemon juice in and quickly put the balloon over the mouth of the bottle.
   What's happening？
   If all goes well，then your balloon should inflate!Adding the lemon juice to the baking soda creates a chemical reaction and produces CO_2.The gas rises up and escapes（逸出） through the soft drink bottle.It doesn't，however，escape the balloon，pushing it outwards and blowing it up.

（1）Which of the following do you need for the experiment？
A．Two cups.
B．Apple juice.
C．250 ml water.
D．A teaspoon of baking soda.
（2）What should you do before the experiment？
A．Heat the water.
B．Drink some juice.
C．Blow up the balloon.
D．Pull the balloon long.
（3）What is the purpose of the text？
A．To describe an experiment.
B．To introduce a game.
C．To produce soft drinks.
D．To save some chemicals.

共享时间:2022-10-19 难度:2

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[考点]

科普知识，细节理解，

[答案]

DDA

[解析]

（1）D.细节判断题。根据What need：★ About ml water cup about ml you need Soft bottle★ from a 1 teaspoon baking ，所以你不需要太多）★汽水瓶★柠檬汁★1茶匙小苏打，实验需要8茶匙小苏打。
（2）D.细节理解题。根据 Before begin sure you the long make as as to up.在你开始之前，使它尽可能容易充气，实验前要把气球拉长一点。
（3）A.作者意图题。根据文章标题Blowing Balloons CO₂.用二氧化碳吹气球。以及通读全文可知。作者写这篇文章是为了向我们描述这个实验。

[点评]

本题考查了"科普知识细节理解 ",属于"必考题"，熟悉题型是解题的关键。

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46204. （2021•铁一中学•七下一月） There are many kinds of parrots（鹦鹉） .Some are quite big，but others are very small.People like them because they often have beautiful，bright colors and also because some of them can talk.
No one knows why some parrots can talk.Most other birds cannot.Some people have the idea that parrots can talk because they have big，thick tongues（舌头）.However，there are birds that can talk without having big，thick tongues as well as birds that cannot talk even with big，thick tongues.
Parrots do not usually know what they are saying when they talk.They are only copying the sounds they hear.However they know when to say some words，such as "Hello" and "goodbye".
Most parrots come from hot countries，but they can live anywhere.This is one reason why sailors（水手）like to take parrots with them on long trips.Perhaps another reason is that they want someone to talk with.

（1）Why do people like parrots？
A．Because of their clear voice.
B．Because of their special builds.
C．Because of their thick tongues.
D．Because of their beautiful color.
（2）How do parrots say most of the words？
A．By staying with sailors.
B．By learning from other birds.
C．By copying the sounds of the words.
D．By knowing the meanings of the words.
（3）Sailors take parrots with them on long trips because       .
①Parrots can live everywhere.
②They need someone to talk with.
③Parrots can tell the way on the sea.
④They want to take them to hot countries.
A．①②
B．①③
C．②③
D．②④
（4）Which of the following is TRUE according to the passage？
A．Parrots like talking with sailors.
B．Parrots know what they are saying.
C．There are different kinds of parrots.
D．Birds can talk with big，thick tongues.
（5）Where can we find the passage？
A．In a story book.
B．In a guide book.
C．C.In a history book.
D．In a science book.

共享时间:2021-04-17 难度:3 相似度:1.67

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40580. （2021•高新一中•八上一月） You may know the song Happy Birthday very well．But do you know about its writer？It was written by an American girl．And she became very rich after that．
   When she was a child，she was poor．Once，she was invited to her friend's birthday party．She was pleased but sad because she didn't have enough money to buy a gift for her．"The party is coming soon，but now I have little money．"Tears ran down her face．
   Later that night she was in bed，thinking about the gift when the door opened and her grandma came in．"What happened？"her grandma asked．Hearing the girl's story，she said，"Don't worry．I think I can help you．How about singing a song together？Happy birthday to…"What a beautiful song！They sang and sang．Suddenly she woke up．It was a dream！She decided to write it down at once and sing it to her friends at the party．
   When she sang the song at the party the next day，her friends were very happy．"How wonderfully you sing！We haven't heard such a beautiful song before．Thank you for giving me the special gift，"said her friend．And they learnt to sing it together．Later the girl became well-known in America．

（1）The song Happy Birthday was written by        ．
A．an American girl
B．an American girl's grandma
C．an American boy
D．an American girl's friend
（2）The girl was sad because        ．
A．she didn't want to go to the party
B．she would be busy that day
C．she didn't have enough money to buy a gift
D．she wasn't invited to the party
（3）What gift did the girl give her friend？
A．A flower．
B．A toy．
C．An interesting book．
D．A song．
（4）The girl's friends thought the song was        ．
A．boring
B．beautiful
C．exciting
D．interesting
（5）Which of the following is TRUE？
A．The girl was still poor after writing the song．
B．The girl sang the song with her grandpa in her dream．
C．The girl's friends had heard the song before．
D．The girl became famous because of the song．

共享时间:2021-10-12 难度:3 相似度:1.67

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37581. （2024•铁一中学•九上一月）     Scientists say that hobbies can make kids smarter，healthier and even more successful when they grow up.How？
     They Help You Learn
     When you have a hobby，you learn new things.You have to read instructions.You look at websites，magazines and books to get more information about your hobby.More reading makes you a better reader and a better learner.
     They Help You Be Creative
     For many hobbies，such as building model cars and making clay pieces，you have to use your brain as well as your hands.We learn by doing things and by touching things.These kinds of activities make people more creative.
     They Help You Be Relaxed
     Having a hobby makes you feel good.Scientists say，"When you make something，the 'feel-good' part of your brain gets a message.It makes you feel happy."When we feel happy，we have less stress.Too much stress can make people sick.
     They Help You Build Skills
     People with hobbies learn how to set goals and solve problems.Learning these skills when you are young can help you when you grow up.For some kids，having a hobby can be the first step to finding a good job in the future.

（1）According to the text，in how many ways can hobbies help kids？
A.One.
B.Two.
C.Three.
D.Four.
（2）For which hobby do you have to use your brain and your hands？
A.Watching cartoons.
B.Reading novels.
C.Making a clay dog.
D.Listening to music.
（3）What is the text mainly about？
A.The meaning of life.
B.The ways of developing hobbies.
C.The importance of learning.
D.The advantages（优点） of hobbies for kids.

共享时间:1970-01-01 难度:2 相似度:1

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40340. （2021•西工大附中•七上二月） Do you know Zhang Jike？He is a famous ping-pong player in China.Many young people like him very much.If you like him，you may buy these cool clothes on sale.You can wear them to play ping-pong!Welcome to the store now.


Men's Jacket Price：＄50 Color：Red and blue On sale： If you buy two，you can get the second one for 50% of the price.	Men's Shoes Price：＄40 Color：Blue，black，red and brown On sale： You can get one pair for 60% of the price.	Men's T-shirt Price：＄ 12 Color：Grey，black and white On sale： You can buy two at the price of ＄15.	Men's trousers Price：＄ 35 Color：Black and grey On sale： You can buy one at the price of ＄30.

（1）Zhang Jike is a         player.
A．baseball
B．soccer
C．ping-pong
D．basketball
（2）How many colors do the shoes have？
A．One.
B．Two.
C．Three
D．Four.
（3）How much do you pay（付款） if you buy two men's jackets？
A．＄50.
B．＄75.
C．＄80.
D．＄100.

共享时间:2021-12-27 难度:2 相似度:1

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46225. （2020•铁一中学•七上一月）

My name is Ben Brown and I'm from Canada. My telephone number is 3694-5501.	My name is Dale Miller and I am an English boy，but I am in China now.My telephone number is 8890-1277.
Hi，I'm Zhang Mingming from China.I am in Japan with my parents now.7632-1098 is my telephone number.	Welcome to America！I'm Alice and my family name is White. If you want to make friends with me，you can call me at 3457-8765.

（1）Where is Ben from？
A．England
B．Canada
C．China
D．America
（2）What's Alice's telephone number？
A．3694-5501
B．8890-1277
C．7632-1098
D．3457-8765
（3）Who is in China？
A．Zhang Mingming
B．Dale
C．Alice
D．Ben

共享时间:2020-10-12 难度:2 相似度:1

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46173. （2020•西工大附中•八上二月）

Name	Hobby	Dream	How to make his/her dream come true
Bob	Music	be a popular singer	practice singing in the school music club and take part in the city's 12th singing competition next year
Kate	Dancing	work as a dancer in London	go to the dancing club to practice dancing every week
Hector	playing sports	be a runner in the national team	join a sports club this term
Isabel	traveling	work as a doctor in Beijing	go to China to study Chinese medicine next year
Ted	playing sports	be a great basketball player like Jeremy Lin	join a basketball club and exercise every day

（1）There is going to be a         in Bob's city next year．
A．dancing competition
B．singing competition
C．basketball game
D．running competition
（2）Kate wants to work as a         in England．
A．player
B．doctor
C．runner
D．dancer
（3）Hector and Ted both like        ．
A．music
B．dancing
C．playing sports
D．traveling
（4）        wants to work in China when he grows up．
A．Bob
B．Isabel
C．Ted
D．Hector
（5）From the above information we know that        ．
A．Ted is going to study Chinese medicine next year
B．Isabel likes traveling very much
C．Bob wants to be a basketball player
D．none of the five people likes dancing

共享时间:2020-12-10 难度:2 相似度:1

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46144. （2020•师大附中•八上二月） In a small town in Europe，there is a tradition：after a person dies，his or her family will write an obituary（讣告） on he local newspaper.They need to pay l euro（欧元）for each word in the obituary.
   Mr.Peter Monaghan was a kind and gentle man.Many people in the town liked him.He and his wife had two houses.At the time，they needed money to decorate（装修）their bedrooms and living room of one house.So they were planning to sell the other house.
   But Peter was in poor health and passed away.Mrs.Monaghan was very sad.A week later，she went to the newsroom to pay for Peter's obituary.
   The newsman told her that it was I euro for each word and he remembered Peter.He also said that he was sorry to hear about Peter's death.
   Mrs.Monaghan thanked him for his kind words and said she only wanted to spend 2 euros on the obituary：" Peter died." The newsman said he thought old Peter deserved（值得）more words for his obituary.He told Mrs.Monaghan that he would give her three more words for free.
   Mrs.Monaghan thanked him and rewrote the obituary：" Peter died.House for sale."

（1）Which of the following is TRUE according to the text？
A．Peter and his wife lived in a small town in Europe.
B．The Monaghans wanted to decorate their kitchen.
C．Mrs.Monaghan paid the obituary two weeks later.
D．Peter died after they sold one of their two houses.
（2）From the text we can guess that        .
A．The newsman didn't know Mr.Monaghan
B．Mrs.Monaghan paid more money for the obituary
C．Mr.Monaghan was popular in his small town
D．Mrs.Monaghan didn't want to sell one of the two houses after Peter died
（3）What was Mrs.Monaghan like？
A．Stingy（吝啬的）.
B．Humorous.
C．Helpful.
D．Gentle

共享时间:2020-12-16 难度:2 相似度:1

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46036. （2021•交大附中•八上二月） Do you like eating ice cream？Do you know how ice cream spread in the world？
    The earliest ice was eaten in China many years ago．People put fruit juice into ice．Later，this idea spread to Italy．Nero，the emperor of Roma between 54 AD and 68 AD，liked to eat ice between violin lessons．He ordered runners to run to the mountains，get snow and quickly run back to the palace．The snow was mixed with fruit juice and honey．
    Around 1660，coffee shops serving ice cream were very popular in Paris．Most of the coffee shops were owned by Italians．The first successful one was opened by a man from Italy named Francesco Procopio．
    Ice cream was probably to America in the early 1700s，and it quickly became the favorite of American presidents．George Washington had ice cream machines in his kitchen．Dolly Madison，the wife of President Madison，was the first one to serve her guests ice cream in the White House．
    Before ice cream was sold in stores，it was made and frozen（冷冻） at home．It took lots of work to mix cream，eggs，fruit，ice and salt，and then to freeze it．Nancy Johnson，an American woman made the hand-turned ice cream freezer in 1846．Five years later，Jacob Flusell opened the first ice cream business in Baltimore，Maryland．His business quickly spread to other states．

（1）People in China and Italy ate ice with         many years ago．
A．cream
B．coffee
C．fruit juice
D．eggs and salt
（2）From the passage we know that Francesco Procopio        ．
A．was a Frenchman
B．made an ice cream machine
C．opened the first ice cream shop in Paris
D．opened the first successful coffee shop serving ice cream in Paris
（3）We can learn from the passage that Dolly Madison        ．
A．brought ice cream to America
B．was once the president of America
C．opened the first ice cream business in Baltimore
D．was the first one to serve the guests ice cream in the White House
（4）How did ice cream spread in the world？
A．China→Italy→France→America．
B．China→France→America→Italy．
C．Italy→China→France→America．
D．America→France→Italy→China．
（5）The passage mainly talks about        ．
A．how to make ice cream
B．the history of ice cream
C．why people like eating ice cream
D．ice cream shops around the world

共享时间:2021-12-29 难度:2 相似度:1

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46035. （2021•交大附中•八上二月） Can you imagine a pair of shoes that could tie themselves？All you would have to do is to put them on and push a button．Well，this idea is becoming a real reality．The shoe company Nike created the self-tying shoe!This idea first came from the movie Back to the Future II，Nike has been working for years to create a shoe that can do this in real life．They have finally done it with Nike HyperAdapt 1.0．
So how do they work？According to Nike，the shoe is"powered by an underfoot-lacing mechanism （脚下系带装置）"．This is kind of like a small motor （发动机） that has the power to lace the shoes．All the wearer has to do is to put them on，and at first，the shoes are very loose （松的）．But then you can push the"+"button （按钮），and the shoes will tighten to be the perfect fit for the wearer．To take them off，all you have to do is to push the"-"button，and the shoes will be easily off．
They haven't been released to the public yet，and the cost of the shoes is still unknown．But you might be able to get a pair of your own closer to the holiday season this year．
（1）The best title to describe the main idea of the passage is        ．
A．Shoes of the future are now a reality
B．Shoes of the future are coming themselves
C．The shoe company Nike and its movie
D．Shoes and movies are doing their work
（2）When did the shoe company Nike start creating the self-tying shoe？
A．Not until the imagination came into being．
B．Soon after the shoe company Nike was formed．
C．After the movie Back to the Future II waown．
D．Before the movie Back to the Future II waown．
（3）What makes the self-tying shoe work？
A．The power from Nike．
B．An underfoot-lacing mechanism
C．Nike HyperAdaPt 1.0
D．Setting a small button with a motor
（4）The first thing for the wearer to do after putting the shoes on is to        ．
A．make them loose
B．make the perfect fit
C．push the"-"button
D．push the"+"button
（5）The Chinese meaning of the underlined word"released"is        ．
A．检验
B．投放
C．注册
D．生产．

共享时间:2021-12-29 难度:2 相似度:1

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45971. （2021•交大附中•七上一月） Good morning!I'm Dale White.What color is my quilt？It's orange.What color is my jacket？It is blue.This is my key.It's black.My cup is white.What color is the map？It's purple.
   Good morning!I'm Cindy Cooper!This is a ruler.What color is it？It's red and white.What's this？It's a pen.It is a black pen.This is an orange.It's orange.
   Hello.I'm Bill Bush.This is my classroom.Can you see my cup？It is green.That is my pen.It's a brown pen.The pen is on my ruler.

（1）What color is Dale's key？
A．Blue.
B．Black.
C．Purple.
D．White.
（2）The black pen is        .
A．Alice's
B．Dale's
C．Bill's
D．Cindy's
（3）The        are orange in the passage（文章）.
A．quilt and orange
B．ruler and orange
C．pen and jacket
D．quilt and jacket
（4）Who has a green cup？
A．Bill.
B．Cindy.
C．Alice.
D．Dale.
（5）You can NOT see Bill's        in the classroom.
A．pen
B．ruler
C．cup
D．jacket

共享时间:2021-10-14 难度:2 相似度:1

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45860. （2021•铁一中学•八上二月） "Robots，drones （无人机） and AI will do around 90% of the housework by 2040，" scientists from King's College said.
Mischa Dohler and Dr.Lan Pearson wrote the report Life More Automated Report to predict what homes will look like in 20 years.In it，they said that housework like washing clothes and dishes would be much easier because of technology progress （进步）.If technology kept making progress，they expected that people would spend less than two hours a day in doing housework.
But most British people still don't believe their predictions.Just 2/5 of the people think that house robots will become a reality （现实） by 2040.

Predictions of Automation （自动化） by 2040
House Robots
There will be house robots in people's homes.They will be able to do some of the housework all by themselves.
Drones
Small drones will be common.Some will keep the house clean，water plants and keep an eye on your house.Some will keep your warm with special light when you move around the house.
AI servants
They will do almost everything for you.They will be able to pay the bills （账单），do some shopping and find ways to save your time and money.
Super Smart Fridges
They will learn what you eat.They can tell you how much food there is in the fridge，and even recommend （推荐） recipes.

（1）What does the underlined word "it" refer to？
A．A robots.
B．A house.
C．The report.
D．King's College.
（2）What can we learn from Paragraph 2？
A．People will not need to do any kind of housework.
B．People will spend less time doing housework.
C．Most people believe house robots won't come true.
D．Most houses will have robots in 20 years.
（3）Which of the following is TRUE about the predictions？
A．House robots will do housework with people's help.
B．Some drones can do some housework.
C．Buying AI servants will cost a lot of money.
D．Super smart fridges will clean themselves.
（4）What is the best title （标题） for the passage？
A．Scientist's Everyday Life
B．A Report of Future Life
C．Future of Home Automation
D．Future of AI Technology

共享时间:2021-12-23 难度:2 相似度:1

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45448. （2024•交大附中•九上一月）     Look at any group of teens，and you'll probably see big differences among them.These differences are caused by the changes teens go through during adolescence（青春期）.Let's learn about some changes about it.
    Physical Changes
    Over the past summer，Phil noticed his voice beginning to change.Acne（青春痘） is appearing on Marie's face.Changes such as these mean the arrival of adolescence.Other changes that occur include the growth of body hair，the shape of your body changes，and you grow taller.Although these situations can be troubling，remember that they are only temporary（暂时的）.
    Mental（心理的）Changes
    During adolescence，you begin to think about things in new ways.You learn to express different opinions or points of view.You will begin to recognize your own values and beliefs.You will also get to know how your opinions，decisions，and actions influence others.You might be happy one moment and sad the next.Talk about your feelings with others.This will help you manage your feelings in a healthy way.
    Social Changes
    You become more independent.Your parents may give you more things to do.For example，you may be asked to help prepare meals.
    During this time，your friends are going through changes like you and can understand how you feel.As a result，their opinions and actions may influence you without you even knowing it.Choose friends that support you and influence you in a positive way.This will help you make good choices during your teen years.
    For all of these changes above，you should accept them that come with this period of growth and development.And then prepare for successful adulthood.
（1）Why are there big differences among a group of teenagers？
A.Because their physical situations are different.
B.Because they are more independent and responsible.
C.Because they are going through the changes during adolescence.
D.Because they may enter their adulthood soon.
（2）The underlined word "occur"probably means "        "in the passage.
A.continue
B.happen
C.develop
D.begin
（3）Which of the following do teenagers realize during adolescence？
①Think about things differently
②Recognize their own values and beliefs
③Believe their abilities in achieving their goals
④Know how their opinions，decisions，and actions influence others
A.①②③
B.①③④
C.①②④
D.②③④
（4）What can we infer（推断） from Paragraph 5？
A.Teenagerould choose their friends wisely.
B.Teenagerould spend more time with their friends.
C.Friends are as important as parents for teenagers.
D.Friends can understand us better every time.

共享时间:2024-10-24 难度:2 相似度:1

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38738. （2024•西光中学•七上一月）根据以下内容，从A、B、C、D四个选项中选出正确选项．

$德优题库$	This is Alice． What is in Alice's schoolbag？ ★ A yellow pen ★ A blue ruler ★ A green cup ★ An orange
$德优题库$	This is Cindy． What is in Cindy's schoolbag？ ★ A purple pen ★ A red cup ★ A key ★ A CD
$德优题库$	This is Frank． What is in Frank's schoolbag？ ★ A green jacket ★ A black pen ★ An English book ★ A map

（1）Alice's pen is        ．
A．yellow
B．blue
C．red
D．purple
（2）You can see a         in Cindy's schoolbag．
A．ruler
B．jacket
C．map
D．key
（3）        has a map．
A．Frank
B．Cindy
C．Alice
D．Eric
（4）Everyone（每个人） has a        ．
A．book
B．pen
C．CD
D．cup
（5）        are green．
A．Alice's cup and Frank's map
B．Cindy's pen and Frank's jacket
C．Alice's cup and Frank's jacket
D．Cindy's key and Alice's ruler

共享时间:2024-10-29 难度:2 相似度:1

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40401. （2021•西工大附中•八上二月） $德优题库$ DIY Your Own Desserts
We offer different kinds of classed to you all．A very popular class we are offering these
10 days is the class named "DIY Your Own Desserts"．
   Can you imagine how happy your beloved one will be happy when you give him/her your DIY desserts on the special days like birthday，Mother's Day and Father's Day？Come to our class and make your own desserts．Give your beloved one some surprises!
   The class runs daily and it is a completely hands-on personal cooking experience lasting up to 4 hours learning 3-4 recipes （食谱） each lesson．The teacher will first show how to cook different recipes in front of you．And then he will guide you on how to prepare and make the food．
   At the end of the class you can either eat the meal prepared during the class or take it home with you．What's more，you'll be able to take home the copies of all the recipes．
   Costs：￥30 each lesson．You can start at any time．
   Go to our website to get more information about the class．
   You can either e-mail us or come to our office for attending it．
（1）You can join the class if you like to        ．
A．offer some recipes
B．teach how to cook
C．make desserts yourself
D．get some surprises
（2）You will         in the class．
A．eat the meal with the teacher
B．celebrate the special days
C．learn 2-3 recipes each lessons
D．have a hands-on experience
（3）You will pay         for five lessons．
A．￥30
B．￥60
C．￥120
D．￥150
（4）How can you attend the class？
A．Make a phone call to them．
B．Send them an e-mail．
C．Get information from parents．
D．Come to the class directly．

共享时间:2021-12-17 难度:2 相似度:1

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45446. （2024•交大附中•九上一月）     3 D films are not new.They first appeared in 1903.The inventors wanted viewers to feel like they were really inside the film they were watching!When you watch a 3 D film，you feel as if the people on the screen are close enough to touch and that the airplane flying at you is flying right off the screen.To watch 3 D films，you may need to wear special glasses.Usually，people buy the glasses in the cinema.But have you ever thought of making one pair by yourself？
    Here are tips for making your own 3 D glasses.
$德优题库$
    Next time when you go to watch a 3 D film，don't forget to take your own handmade glasses!
（1）3 D films were invented to        .
A.make the airplane fly right off the screen
B.make viewers touch the people on the screen
C.make the people on the screen closer to viewers
D.make viewers feel like they were really inside the film
（2）According to the passage，our own 3 D glasses are made up of        .
①glass②cardboard ③acetate④paper
A.①②
B.②③
C.①③
D.③④
（3）The passage probably comes from        .
A.a story book
B.a film poster
C.a news report
D.a science magazine

共享时间:2024-10-24 难度:2 相似度:1

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scn@dyw.com

2022-10-19

初中英语 | 九年级上 | 阅读理解

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