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Amos Dudley, a 24-year-old boy who studies digital design at New Jersey University of Technology, felt ashamed about his teeth. But being a student, Dudley didn’t have the money to get braces(牙箍). So, he decided to
3-D print his own and marked down the DIY project in a recent blog post. His braces totaled less than $60, and after wearing them for 16 weeks, his teeth are also getting straighter.
Months ago, he mentioned on his blog that he avoided smiling for a while because he was unhappy with his teeth.
However, clear braces can get pricey, costing up to $8,000. But after studying some images of these expensive clear braces, something comes up on him--they looked like that one which can come from a 3-D printer.
So he decided to hit up his school’s 3-D printing equipment and scanned and printed models of his teeth. He
then made non-harmful plastic molds (模子) around them to make 12 sets of braces.
Dudley, who does not recommend attempting any of this at home said that he didn’t ask a dentist for his project. But the student did get information from journal articles and textbooks. And though this was a perfectly
friendly choice to buy braces. He didn’t accept the project just to save money--he was also up for the challenge. “When I realized that I could do something that was a little bit special, while proving my skills as a designer
and a maker, and fixing something that was making me self-conscious for actually free, I felt it was more than worth the risk.” he said.
1.Dudley got the information on making a 3-D printed braces from___________.
A. a professional magazine
B. a recent blog post
C. journal articles and textbooks
D. a 3-D printer user
2.Why did Dudley choose a 3-D printer braces over-buying them?
A. He didn’t have enough money.
B. He felt ashamed about his teeth.
C. He studies digital design at school.
D. He wanted to be a famous person.
3.What made Dudley get the idea of using 3-D printed braces?
A. The advice from the dentist.
B. The advice from his friends.
C. His major studies at university.
D. The possibility of making 3-D braces.
4.According to the page, Dudley___________.
A.has got a 3-D printer at his home
B.did the project totally for challenge.
C.made each set of braces cost less than 5 dollars
D.supports others to try making their own 3-D braces
5.The article is mainly about___________.
A.a 3-D printer made braces cheaper
B.A college student made fantastic 3-D braces.
C.digital design major student created 3-D printers
D.3-D braces with non-harmful plastic molds became popular
九年级英语阅读理解中等难度题查看答案及解析
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We spend money everyday. But, do you know how to design them? David, a 15-year-old boy from the UK, just became the designer of the new one-pound(一英镑) coin.
To fight against fake(假的) coins, the UK government(政府) had a design competition（竞赛） in September last year. Among about 6000 works, David’s design was the best one and won the competition.
The new coin has 12 edges. On one side is the picture of the queen. And on the other side,he designed a crown(皇冠) and four plants. And the government will use the coins in 2017.
1.Whose design was the best in the design competition?
__________________________________________________________________
2.Why did the UK government have the design competition?
__________________________________________________________________
3.How many works were there in the competition?
___________________________________________________________________
4.What is on the other side of the coin?
__________________________________________________________________
5.When will the coins be in use?
__________________________________________________________________
九年级英语其他题中等难度题查看答案及解析
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Toby was a 13-year-old boy. He studied in a middle school in Paris. He was quite a clever boy and was good at almost everything. However, he had a problem. He had a fear (恐惧) of heights. This problem made him unhappy for a long time. He talked to his father about it one day.
“I’ve had enough, Dad,” he said. “I would love to go rock climbing with my friends. But every time I get too high, I feel afraid.”
His dad paused (停顿) as he thought about his son’s __▲ .
“well, Toby,” he said quietly, “I can help you. But you will need to be brave. Are you ready?”
Toby was quiet for a few minutes.
“I am ready!” he answered bravely.
Toby’s father picked up the keys and walked towards the front door.
“we’re going into the city!” his father said.
Toby knew what was coming. Toby lived in Paris. One of the world’s tallest buildings was there. That was the Eiffel Tower. Nothing was said between them as they drove into the city.
After about an hour, they arrived at the Eiffel Tower. Toby looked up at it.
“Can I really do this?” he asked worriedly.
“Well,” his father said, “I will be with you every step of the way. This is the day that you fight your fear! Come on!”
Toby took a breath. His father held his hand and then they made their way, step by step, towards the top of the Eiffel Tower. At last they got to the top.
“Wow, Dad!” he said excitedly as he looked over Paris.
“I told you there was nothing to worry about,” his father said.
1.The word “it” in Paragraph 1 means the fact that __ .
A. Toby had few friends
B. Toby was afraid of heights
C. Toby planned to visit the Eiffel Tower
D. Toby wanted to join a mountain climbing club
2.The best word for “__▲ ” is “_______”.
A. dream B. plan C. problem D. study
3.Toby went to the Eiffel Tower _______.
A. by bus B. by bike C. by taxi D. by car
4.How might Toby’s father feel about Toby at the end of the story?
A. Hopeless. B. Happy. C. Surprised. D. Worried.
5.This story is mainly about _______.
A. fighting fear B. making friends
C. giving advice D. choosing hobbies
九年级英语阅读单选中等难度题查看答案及解析
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Choose the words and complete the passage.（选择最恰当的单词完成短文。）
Jimmy is a 6-year-old boy. He studied very hard ____________ he wanted to be a doctor when he grew up.
One day when Jimmy was ____________ in his house, he ran into the corner of the table and hurt his eye. Jimmy cried for a while and ____________ saying: " Oh, no,..., now I can’t be a doctor when I grow up".
Jimmy’s mother saw him ____________. She tried to make him feel ____________. She told Jimmy he could still be a doctor. But Jimmy insisted (坚持) that he couldn’t.
"Why can’t you be a doctor, Jimmy?" Mom asked.
With one hand over his injured(受伤的) ____________, Jimmy said: "Because now I will have to be a pirate(海盗)!"
1.A.but B.because C.so D.if
2.A.running B.flying C.singing D.talking
3.A.stopped B.finished C.enjoyed D.kept
4.A.sleeping B.crying C.playing D.sitting
5.A.upset B.lucky C.better D.sleepy
6.A.hand B.head C.nose D.eye
九年级英语完型填空中等难度题查看答案及解析
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A 10-year-old boy decided to study judo (柔道), although he had lost his left arm in a car accident.
The boy began lessons with an old Japanese judo teacher, Mr. Tanaka. The boy was doing well, but his teacher had taught him only one move in three months of training.
“Mr. Tanaka,” the boy finally asked, “shouldn’t I be learning more moves？”
“This is the only move you know, but this is the only move you’ll ever need to know,” his teacher replied.
Several months later, Mr. Tanaka took the boy to his first tournament (锦标赛). The boy won his first three matches, using his one move to win. The boy was now in the finals, and was amazed by his own success.
This time, his opponent (对手) was bigger, stronger, and more experienced. The referee (裁判) wanted to stop the match.
“No,” the teacher insisted, “let him continue.” Soon, his opponent lowered his guard. At that moment the boy used his move to pin (钉住) him. The boy won the match an
d became the champion.On the way home, the boy and his teacher reviewed every match. Then the boy asked what was really in his mind.
“Mr. Tanaka, how did I win the tournament with only one move？”
“You won for two reasons,” his teacher answered. “First, you’ve almost mastered one of the most difficult throws in all of judo. And second, the only defense (防守) for that move is for your opponent to catch your left arm.”
The boy’s biggest weakness had become his biggest strength (优点).
1.The boy decided to study judo though ____________.
A．he was only ten years old
B．he would have an old teacher
C．he had lost his left arm in a car accident
D．he knew he was not clever
2.How did the boy feel when he was in the finals？
A．Proud. B．Surprised. C．Worried. D．Happy.
3.What can you infer (推断) from the passage？
A．The boy wasn’t doing well at first.
B．Mr. Tanaka is a good teacher because he knows his student’s strength and weakness.
C．The referee believed the boy would win.
D．The boy had predicted that he would win.
九年级英语阅读理解中等难度题查看答案及解析
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A 10-year-old boy decided to study judo* although he had lost his left arm in a car accident. The boy began 11 with a Japanese judo coach. The boy was doing well, so he couldn’t know 12 the coach taught him only one move. After three months of 13 , the boy finally asked, “Sir, should I start to learn more moves?”
“This is the only move you know, 14 this is the only move you’ll need to know,” the coach replied. Not quite understanding, but the boy 15 his teacher. So he kept training.
Several months 16 , the coach took the boy to his first match. To his surprise, the boy 17 won his first match. The second match was more difficult. But after some time, his opponent* became impatient. The boy used his one move to win the match again. 18 of the people in the stadium were amazed by his success. The boy was now in the finals.
This time, his opponent was bigger, 19 , and more experienced. For a while, the boy seemed to 20 . Worried that the boy 21 get hurt, someone shouted, “Stop! Stop! Stop!” However, the coach said, “No, 22 .”
As the match was keeping on, his opponent made a big mistake: he dropped his guard. Quickly, the boy used his move to 23 him. The boy won the final match. He was the winner.
24 the way home, the boy asked his coach: “Sir, how did I win the match with only one move?”
“You won for 25 reasons,” the coach answered, “First, you’ve almost known one of the most difficult moves in all of judo. And second, the only defense* for that move is for your opponent to catch your left arm.”
The boy’s greatest weakness had become his greatest strength.
1.A. class B. learn C. lessons D. work
2.A. why B. what C. when D. how
3.A. doing B. running C. writing D. training
4.A. so B. but C. or D. until
5.A. asked for B. depended on C. believed in D. came out
6.A. later B. ago C. before D. after
7.A. slowly B. easily C. carefully D. hardly
8.A. None B. Both C. All D. Either
9.A. weaker B. worse C. cuter D. stronger
10.A. win B. lose C. take D. throw
11.A. might B. can C. must D. should
12.A. stop B. play C. stay D. continue
13.A. fail B. win C. get D. beat
14.A. In B. At C. On D. For
15.A. one B. two C. three D. four
九年级英语完型填空困难题查看答案及解析
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Nick is a 14-year-old school boy. His life is full of exams and studies on weekdays. He has little free time. He thinks playing computer games is the best way to make him relax. When he has free time, he sits in front of the computer. Just like that way, he neither eats nor drinks for several hours.
Last weekend, he played games on the computer again. He was too excited and didn't want to move. He didn't have anything for six hours. When he had to go to the bathroom, he found he could not move. He was taken to the hospital. The doctor told him he should do some more different kinds of activities. In other words, he needs more exercise and outdoor activities to make him have a healthy body.
After coming back from the hospital, Nick follows the doctor's advice. He often plays soccer with his friends. Sometimes he still plays computer games on weekends, but he never does it for long. Now, he lives a happy and healthy life.
1.How old is Nick?
A. 13. B. 14. C. 15. D. 16.
2.Nick likes _________ in his free time.
A. riding a bike B. playing the guitar
C. playing computer games D. having a school trip
3.Who took Nick to the hospital?
A. His dad. B. His mom.
C. His neighbor. D. We are not sure.
4.Why was Nick taken to the hospital?
A. Because he was too excited.
B. Because he had a cold in the morning.
C. Because he was too nervous of his studies.
D. Because he couldn't move after playing computer games so long.
5.Nick should ________ to follow the doctor's advice.
A. go to a movie B. listen to music
C. take more exercise D. play computer games
九年级英语阅读单选中等难度题查看答案及解析
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Nick is a 14-year-old school boy. His life is full of exams and studies on weekdays. He has little free time. He thinks playing computer games is the best way to make him relax. When he has free time， he sits in front of the computer. Just like that way， he neither eats nor drinks for several hours.
Last weekend， he played games on the computer again. He was too excited and didn't want to move. He didn't have anything for six hours. When he had to go to the bathroom， he found he could not move. He was taken to the hospital. The doctor told him he should do some more different kinds of activities. In other words， he needs more exercise and outdoor activities to make him have a healthy body.
After coming back from the hospital， Nick follows the doctor's advice. He often plays soccer with his friends. Sometimes he still plays computer games on weekends， but he never does it for long. Now， he lives a happy and healthy life.
1.How old is Nick?
A．13. B．14. C15. D．16.
2.Nick likes _________ in his free time.
A．riding a bike B．playing the guitar
C．playing computer games D．having a school trip
3.Who took Nick to the hospital?
A．His dad. B．His mom.
C．His neighbor. D．We are not sure.
4.Why was Nick taken to the hospital?
A．Because he was too excited.
B．Because he had a cold in the morning.
C．Because he was too nervous of his studies.
D．Because he couldn't move after playing computer games so long.
5.Nick should ________ to follow the doctor's advice.
A．go to a movie B．listen to music
C．take more exercise D．play computer games
九年级英语阅读理解中等难度题查看答案及解析
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Nick is a 14-year-old school boy. His life is full of exams and studies on weekdays. He has little free time. He thinks playing computer games is the best way to make him relax. When he has free time, he sits in front of the computer. Just like that way, he neither eats nor drinks for several hours.
Last weekend, he played games on the computer again. He was too excited and didn't want to move. He didn't have anything for six hours. When he had to go to the bathroom, he found he could not move. He was taken to the hospital. The doctor told him he should do some more different kinds of activities. In other words, he needs more exercise and outdoor activities to make him have a healthy body.
After coming back from the hospital, Nick follows the doctor's advice. He often plays soccer with his friends. Sometimes he still plays computer games on weekends, but he never does it for long. Now, he lives a happy and healthy life.
1.How old is Nick?
A．13. B．14. C．15. D．16.
2.Nick likes _________ in his free time.
A．riding a bike B．playing the guitar
C．playing computer games D．having a school trip
3.Who took Nick to the hospital?
A．His dad. B．His mom.
C．His neighbor. D．We are not sure.
4.Why was Nick taken to the hospital?
A．Because he was too excited.
B．Because he had a cold in the morning.
C．Because he was too nervous of his studies.
D．Because he couldn't move after playing computer games so long.
5.Nick should ________ to follow the doctor's advice.
A．go to a movie B．listen to music
C．take more exercise D．play computer games
九年级英语阅读理解简单题查看答案及解析
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Nick is a 14-year-old school boy. His life is full of exams and studies on weekdays. He has little free time. He thinks playing computer games is the best way to make him relax. When he has free time, he sits in front of the computer. Just like that way, he neither eats nor drinks for several hours.
Last weekend, he played games on the computer again. He was too excited and didn't want to move. He didn't have anything for six hours. When he had to go to the bathroom, he found he could not move. He was taken to the hospital. The doctor told him he should do some more different kinds of activities. In other words, he needs more exercise and outdoor activities to make him have a healthy body.
After coming back from the hospital, Nick follows the doctor's advice. He often plays soccer with his friends. Sometimes he still plays computer games on weekends, but he never does it for long. Now, he lives a happy and healthy life.
1.How old is Nick?
A．13. B．14. C15. D．16.
2.Nick likes _________ in his free time.
A．riding a bike B．playing the guitar
C．playing computer games D．having a school trip
3.Who took Nick to the hospital?
A．His dad. B．His mom.
C．His neighbor. D．We are not sure.
4.Why was Nick taken to the hospital?
A．Because he was too excited.
B．Because he had a cold in the morning.
C．Because he was too nervous of his studies.
D．Because he couldn't move after playing computer games so long.
5.Nick should ________ to follow the doctor's advice.
A．go to a movie B．listen to music
C．take more exercise D．play computer games
九年级英语阅读理解中等难度题查看答案及解析
d became the champion.