This 12-year-old Girl Built a Robot to Find Plastics in the Ocean
Anna Du was walking along the beach when she noticed plastics there. She reached down to pick them up, and quickly realized there were many more tiny pieces than she could deal with. It seemed impossible to clean them all up.
Du, 12 years old at the time, tried to solve the problem like any good scientist—first, by doing a little research. That’s how she learned that 8 million tons of plastics end up in the oceans every year.
Then she got to work building something that could help solve the problem; a remote-operated vehicle(遥控潜水器), or ROV. Her ROV can move through water and find plastics on the ocean floor.
The actually cool part of Du’s ROV is the detection(探测) system. She uses a camera along with three different kinds of light to find the plastics. She also uses visible(可见的) light to find unnatural colors that might make the plastics stand out.
“She has a very good engineering sense to break down a problem like this and then go after it,” says engineer Casey Machado. “It sounds simple, but it’s a level of thinking that’s really amazing. ”
Du started attending public events and workshops at a university when she was five years old, and so she picked up the engineering skills necessary to build her ROV. She says actually getting her ROV to move through water well was not easy. She failed many times, but she never gave up trying and testing.
When asked about future plans, she mentions wanting to address the effects of climate(气候) change. “I think there are a lot of problems that could be solved with new inventions,” says Du.
Du thanks her parents, who for years have taken her to student outreach activities, for supporting her interest in science, technology, engineering and math (STEM). She says she has been able to meet students and scientists there.
“I know I want to be an engineer because I like building things to help solve world problems,” says Du. “But I’m not sure what kind of engineer I want to be yet.”
1.What did Anna Du notice while walking along the beach?
2.How old was Du when she did a little research to solve the problem?
3.What can Du’s ROV do?
4.Why does Du want to be an engineer in the future?
5.What made Du succeed in building her ROV?
九年级英语回答问题困难题
This 12-year-old Girl Built a Robot to Find Plastics in the Ocean
Anna Du was walking along the beach when she noticed plastics there. She reached down to pick them up, and quickly realized there were many more tiny pieces than she could deal with. It seemed impossible to clean them all up.
Du, 12 years old at the time, tried to solve the problem like any good scientist—first, by doing a little research. That’s how she learned that 8 million tons of plastics end up in the oceans every year.
Then she got to work building something that could help solve the problem; a remote-operated vehicle(遥控潜水器), or ROV. Her ROV can move through water and find plastics on the ocean floor.
The actually cool part of Du’s ROV is the detection(探测) system. She uses a camera along with three different kinds of light to find the plastics. She also uses visible(可见的) light to find unnatural colors that might make the plastics stand out.
“She has a very good engineering sense to break down a problem like this and then go after it,” says engineer Casey Machado. “It sounds simple, but it’s a level of thinking that’s really amazing. ”
Du started attending public events and workshops at a university when she was five years old, and so she picked up the engineering skills necessary to build her ROV. She says actually getting her ROV to move through water well was not easy. She failed many times, but she never gave up trying and testing.
When asked about future plans, she mentions wanting to address the effects of climate(气候) change. “I think there are a lot of problems that could be solved with new inventions,” says Du.
Du thanks her parents, who for years have taken her to student outreach activities, for supporting her interest in science, technology, engineering and math (STEM). She says she has been able to meet students and scientists there.
“I know I want to be an engineer because I like building things to help solve world problems,” says Du. “But I’m not sure what kind of engineer I want to be yet.”
1.What did Anna Du notice while walking along the beach?
2.How old was Du when she did a little research to solve the problem?
3.What can Du’s ROV do?
4.Why does Du want to be an engineer in the future?
5.What made Du succeed in building her ROV?
九年级英语回答问题困难题查看答案及解析
Robots have built a big house in Switzerland using 3D-printed materials. It is the first house made by robots for people to live in. It is more environmentally friendly and safer than man-made houses.
The creators say the big house will inspire the future of building. “This is a new way seeing architecture(建筑),” said one of the creators. "How you build is important."
The big house was built completely from robot-made materials. It used 60% less cement(水泥)than a man-made house. Its ceilings(天花板)were made with a 3D printer. There are 35 parts in the house and each one was built in 60 to 90 minutes. It means that the robots built the full house in just 48 hours.
It is not the first time for robots to build houses. The Chinese used 3D printers to build 10 houses in a day in 2014. They created a building the next year. And last year Italians built a house in just 48 hours.
Scientists say one day they could send robots to build houses on the moon. We are curious about how we're building for the future.
根据短文内容,判断句子正(T)误(F)。
1.The big house is the first house made by robots.________
2.The big house does less harm to the environment than man-made ones.________
3.The 35 parts of the big house were built from robot-made materials.________
4.The Chinese created a 3D-printed building in just 48 hours in 2014. ________
5.Robots were once sent to the moon to build houses. ________
九年级英语阅读判断简单题查看答案及解析
Autumn is a 12-year-old American girl. This is a school______ in Logen Middle School. It's Monday morning. Autumn has Science at 7:30. It's her _____ class. In the classroom, every student has a laptop(笔记本电脑). There are two_____ . One gives the lesson. The other helps two disabled(残疾的) students. The class _____ at 8:30.
The maths class is from 8:45 to 9:45. Autumn goes to the next classroom to have it. She doesn't like Maths. It's _____ for her. But the maths teacher wants her to learn it well.
From 10:00 to 11:00, Autumn has no class _____ she needs to do some homework. The teacher helps her with it. After that, she is____ . She can play games in the playground.
______ is from 12:00 to 13.00. She has it at school. The food is healthy and she _____ it.
In the afternoon, she has Art and Music. At 15:00, classes are over. She plays tennis with her friends _____ an hour. At 16:00, she goes home.
1.A. day B. week C. month D. year
2.A. next B. first C. last D. middle
3.A. students B. friends C. teachers D. parents
4.A. shows B. works C. comes D. finishes
5.A. cool B. easy C. difficult D. interesting
6.A. and B. or C. so D. but
7.A. nice B. small C. free D. busy
8.A. Breakfast B. Lunch C. Dinner D. Class
9.A. likes B. finds C. knows D. draws
10.A. at B. in C. of D. for
九年级英语完型填空中等难度题查看答案及解析
用括号里所给动词的适当形式填空。
Susan Davis ,a 14-year-old girl in the US 1.(have) a party. At this party, there are neither cakes nor candles. There is only a room which 2. (fill) with art supplies(供应品) and many kids she has never met. And all the kids that have been invited 3.(be) homeless.
It was last year that Susan 4.(get) the idea last year after her school. She worried that kids who could not afford their own supplies would give up 5.(draw). So she started writing letters to big companies 6.(ask) for help. Then the girl received lots of donations(赠品)from some of the biggest art supply companies. Susan collected more than $3000 in supplies, which was enough to make a home for kids to paint their own watercolors.
By far she7. (hold)three parties. What she did 8.(encourage) by the White House. Susan received the President’s awards(奖赏). Now Susan does it for a different reason— to get the poor kids to enjoy art.
九年级英语语法填空困难题查看答案及解析
Scientists in Britain and the United States have made a new kind of enzyme(酵素)that eats plastics. With its help, plastics can be turned into smaller parts and go away quickly. Scientists believe that, in the future, it could solve the problem of plastic pollution.
The enzyme is able to break down PET, a form of plastic. PET was first made in the 1940s and is now widely used to make plastic bottles. It can remain in the environment for many years and pollute large areas of land and water. So it has always been a headache to deal with the waste from PET and other plastics.
The researchers made the discovery while examining the structure of a natural enzyme in Japan. They found that the natural enzyme was helping to break down PET plastics. So, they decided to make small changes to the enzyme by adding some amino acids(氨基酸). It made the natural enzyme's plasticeating abilities work faster and better.
John McGeehan, one of the lead researchers, said, “We've made an improved enzyme. It's better than the natural one. And we are trying to make more improvements to it.” He went on, “The enzyme is not harmful to humans or animals, and it is friendly to the environment. So we are considering putting it into wider use.”
The team is now trying to make the enzyme break down PET in large quantities(大量地). “We'll_see_that_the_plastic_pollution_may_be_stopped_with_this_technology__However, there is still a long way to go,” John McGeehan added.
1.完成句子:
With the help of this new enzyme, plastics can be________________ smaller parts and go away quickly.
2.完成句子:
PET can pollute large areas of ________________.
3.简略回答问题: What did the researchers find according to the passage?
____________________________________________
4.找出并写下文章的主题句:
____________________________________________
5.将文中画线句子译成汉语:
____________________________________________
九年级英语多任务混合问题中等难度题查看答案及解析
“Which is the right bin for my garbage?” This may be the most-asked question in Shanghai since it started a new garbage-sorting program on July 1, 2019. When learning about the four types of garbage — wet, dry, recyclable and harmful — many people might be confused about how to properly sort it.
To help people figure this out, China’s tech companies are giving a hand. For example, if you want to know which bin your wet wipes (湿巾) should go in, you can just open a mini app (小程序) in WeChat or Alipay and look for “wet wipes”. The app will give you the answer right away. Soon, you might do it in an easier way. Maybe you can just take a photo of the garbage and then be told where it should go.
This kind of technology is called image recognition (图像识别). It uses artificial intelligence (AI, 人工智能). Many companies around the world are making garbage-sorting robots that use this technology. For example, AMP Robotics in the US has made a robot that can sort food and drink packages . By “seeing” pictures on the packaging, the robot will pick up the trash and put it in the right place.
The future of garbage-sorting looks good. But it’s not the best way. The best thing we can do is to make less garbage in the first place.
Four kinds of garbage in Shanghai
1.Why is the question “Which is the right bin for my garbage?” the most asked one in Shanghai?
A.Because Shanghai has the most garbage in China.
B.Because Shanghai started a new garbage-sorting program in 2019.
C.Because people in Shanghai are fond of asking questions.
D.Because people in Shanghai don’t know about garbage.
2.Which of the following is true?
A.Dog waste and paper are wet garbage.
B.Peel and batteries are harmful garbage.
C.Lamp and plastics are recyclable.
D.Clothes and glass bottles are recyclable.
3.If you are confused about how to sort garbage properly, you may ________.
A.Go to China’s high tech companies and ask for help.
B.Take a photo of it and send it to the high-tech company.
C.Open a mini app in WeChat or Alipay and look for answers
D.Buy a robot and ask him to do it for you.
4.According to the writer, the best way to deal with the garbage problem is ________.
A.to make less garbage
B.to sort garbage in a proper way
C.to educate people to know the types of garbage
D.to develop high technology to sort garbage
九年级英语阅读单选困难题查看答案及解析
A 12-year-old girl from Virginia, US, never thought that a simple message she put online could bring her big problems. She posted the words, “Killing. Meet me in the library Tuesday”, with three emojis(表情符号) of a gun, a knife and a bomb(炸弹) on Instagram, a social media(社交媒体). She was told that she broke the law because of threatening(威胁) her school.
This problem is not far away from us. Not long ago, Ni Hanxiang, a Chinese student at a university in the US, was sent back to China after expressing on social media that he would kill his teachers if he failed to pass his exams.
In China, posting threatening words online is also against the law. In 2013, Wu Hongfei, a singer, got into trouble for saying on weibo that she wanted to blow up a building.
“Threatening happens not only face to face but also through the Internet, social media and the telephone,” said Mr. Cao, a lawyer from Chongqing. “Although the law of China protects people’s right of free speech, it doesn’t include words that threaten others’ lives and national safety.”
“Some people may not mean to threaten. They may just be trying to say “I’m strong”, said Fred Pratt, a lawyer from the US.
The girl’s mother said her daughter was a good kid who had never been in trouble before. Ni Hanxiang also said he didn’t realize that what he put online was so serious.
“But not knowing the law doesn’t mean the law will treat you any differently if you break it,” says David Allen Green, a lawyer from the UK. So, do you think we’d better spend a minute or two thinking about the words or emojis we use on social media before we press “send”?
1.The 12-year-old girl from Virginia put the words “Killing. Meet me in the library Tuesday”, with three emojis ________.
A.in her own diary B.in a letter to her friend
C.on a social media D.on the wall of the library
2.Ni Hanxiang was sent back to China ________.
A.because he broke the US law B.because he wasn’t honest
C.after he killed his teachers D.after he blew up a building
3.From this passage, we can infer(推断) that ________.
A.Fred Pratt thinks some people may not mean to threaten
B.the girl’s mother didn’t think her daughter was a bad child
C.Cheating in an examination at school may get you into trouble
D.Putting threatening words on QQ may bring you problems
4.This passage mainly wants to tell us that _______.
A.we shouldn’t break the US law if we study at a university in the US
B.students and singers shouldn’t post words or emojis on social media
C.students should study hard at school and not use the Internet too much
D.we should be careful when we send words or emojis on social media
九年级英语阅读单选困难题查看答案及解析
—Do you like the TV play Flower ?
—Yes. I find the girl in this play ___________.
A. attract B. attracted C. attraction D. attractive
九年级英语单项填空中等难度题查看答案及解析
The 12-year-old girl ____ homework in the telephone booth while her parents were cleaning the street nearby.
A. was doing B. would do C. has done D. did
九年级英语单项填空中等难度题查看答案及解析
The story happened in Nazi (纳粹) Germany at the start of World War II. Liesel is a 12-year-old girl who is adopted (领养) by a rich family because her mother can’t afford to take care of her. On the way to her new home, Liesel steals her first book: The Gravedigger’s Handbook, and begins to read.
Her new family hides a Jewish (犹太) man named Max. He becomes friends with Liesel and teaches her to read in secret. Liesel learns more about the power of words. Then she steals the mayor’s (市长的) book and books that the Nazis want to burn up. Finally she writes her own stories.
Australian author Markus wrote this book and it was published in 2005. It soon became worldwide popular and was translated into several languages. It is not the kind of story that makes you cry one moment and laugh the next. Instead, the sadness of Liesel’s story interests you. It makes you understand that such kinds of things have happened to many people.
1.Liesel was born _____________.
A. in a Nazi family B. in Australia
C. at the start of World War I. D. in a poor family
2.Liesel can’t ___________ in her new family.
A. steal any books B. make friends
C. read her own books D. write her stories
3.From the passage, we know ____________.
A. the book is popular around the world. B. Liesel’s mother sold her for money
C. the story has a happy ending D. Max is killed by Nazi
九年级英语阅读单选简单题查看答案及解析