You’ve heard of 3D printing from newspaper and TV programs. It can “print” in plastic, metal, nylon, and over a hundred other materials. 3D printing technology has been around since the 1980s, it was not widely used until the early 2010s. The first working 3D printer was created in 1984 by Chuck Hull.
3D printers use many different types of technologies, but they all share one thing in common: they create a three-dimensional(维度的) object by building it layer(层), by continuing layer, until the whole object is completed. Imagine a baker lay down each layer one at a time until the whole cake is formed. 3D printing is somewhat similar, but just a bit stricter. How can 3D printers work so well? The most important thing-a program, a 3D printer also needs to have instructions for what to print from a computer. It needs a file as well. The file which is a Computer Aided Design (CAD) paper is created with the use of a 3D modeling program. The program creates a paper that is sent to the 3D printer. Along the way, software pieces the design into hundreds, or more likely thousands of layers. The 3D printer builds up one layer at a time, from the bottom to the top, until the object is done.
3D printings can be used for making many kinds of things such as machine parts, daily life objects, even human organs(器官) using a person's own cells.
Nowadays, Marc. Dillon founds a project which deals with many world famous paintings like Leonardo da Vinci’s Mona Lisa, Van Gogh’s Sunflower with 3D technology. This project helps the blind people enjoy the fantastic art through touching. In order to provide a good user experience, these 3D paintings have special instruments which can tell people what they touch.
1.The first working 3D printer was created in _________.
A. 1980 B. 1984 C. 2001 D. 2010
2.From Paragraph 2, we can know that_______________.
A. how a 3D printer works
B. what a 3D printing is
C. questions of a 3D printer
D. uses of a 3D printer
3.According to the passage, ___________can help the blind know what they touch.
A. CAD paper
B. Machine parts.
C. The world famous paintings
D. Special instruments
4.Which of the following is true?
A. 3D printers use 3 types of technologies.
B. 3D printers make printings from the top.
C. 3D printers work as a baker makes a cake.
D. 3D printers piece the design into a few layers.
Don Ritchie, a famous Australian man. For nearly 50 years, he successfully stopped 160 people from killing themselves at a cliff(悬崖) called ‘the Gap’ – with just a kind word and a smile.
Ritchie had served in the Royal Australian Navy during World War II. In 1964, he moved into a house on Old South Head Road. He began saving strangers soon after.
Ritchie was a real gentleman who purposely chose to live right across the street from ‘the Gap’, just because he wanted to continue saving lives. He would wake up every morning and look out of the window for anyone standing too close to the edge of the cliff. If he saw someone and thought they might jump, he would simply walk over with a smile and say, “Is there something I could do to help you?” That sounds very simple, but it worked – Ritchie tried to have a talk with these people and ended up inviting them back to his house for tea or breakfast.
In 2006, Ritchie was given the Medal of the Order of Australia for all his saving lives. In 2010, he and his wife were named Woollahra Council’s citizens of the year and in 2011, he was given the Local Hero Award for Australia by the National Australia Day Council.
In a situation where most would turn a blind eye, Don has taken action. With such simple actions Don has saved a number of lives. Don’s story touched the hearts of all Australians and challenged us to rethink what it means to be a good neighbor.
1.What is the nationality of Don Ritchie?
A. American. B. Canadian.
C. Australian. D. Britain.
2.Why did he choose to live right across the street from ‘the Gap’?
A. Because he wanted to be proud of himself.
B. Because he wanted to continue saving lives.
C. Because he would like to talk with strangers.
D. Because he would like to enjoy the view outside.
3.When was he given the Local Hero Award for Australia?
A. In 1964. B. In 2006.
C. In 2010. D. In 2011.
4.What can we learn from the passage?
A. It’s important for him to get these prizes.
B. He saved people through giving them money.
C. We should rethink how to be a good neighbour.
D. He stopped 210 people from killing themselves.
Little House on the Prairie（1） Writer: Laura Ingalls Wilder, American. Content: The Little House represents the comfort, communication that we have within ourselves and people around us. Price:$14.6 Page:56 |
Little women （2） Writer: Louisa May Alcott's, American. Content: It is a classical story about the Marchie family of four sisters Jo, Meg, Amy, Beth how to fight for freedom. Price:$59.3 Page: 238 |
Charlotte's Web（3） Writer: E. B. White, American. Content: A spider named Charlotte and her friendship with a pig named Wilbur. Price:$34 Page:243 |
The Chronicles of Narnia （4） Writer: C. S. Lewis, British. Content: The adventures of children who play central roles in the history of Narnia, a place where animals talk, magic is common. Price:$82.2 Page:766 |
1.Who is the writer of The Chronicles of Narnia?
A. Laura Ingalls Wilder B. Louisa May Alcott's
C. E. B. White, American D. C. S. Lewis
2.How much is the book Little House on the Prairie?
A. $14.6. B. $ 59.3 C. $34. D. $82.2.
3.How many pages are there in the book of Charlotte's Web?
A. 56. B. 238. C. 243. D.766.
4.Which book is the classical story of Marchie?
A. Little House on the Prairie
B. Little women
C. Charlotte's Web
D. The Chronicles of Narnia
完形填空
阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。
I have forgotten the name of the old lady, who was a customer(顾客) on my newspaper route when I was twelve. Yet she taught me a________ that I shall never forget.
On a winter afternoon, a friend and I were throwing stones onto the roof of the old lady's house near her garden. I found a perfectly smooth（光滑的） rock and threw it. The stone was too ________ , however, so it slipped(滑) from my hand as I let it go and headed straight for a small window on the lady's door. At the ________ of broken glass, we knew we were in trouble. We ran faster than any of our stones flew off her roof.
I was too ________ about getting caught that first night to be concerned about the old lady with the broken window in winter. However, a few days later, when I was sure that I hadn't been ________ , I started to feel guilty. She still greeted me with a smile each day when I gave her the newspaper, but I was no longer able to act comfortably when seeing ________.
I decided that I would ________ my paper delivery(送) money, and in three weeks I had the seven dollars that I thought would cover the cost of her window. I put the money in an envelope with a ________ saying that I was sorry for breaking her window and hoped that the seven dollars would cover the cost of repairing it.
The next day, I ________ the old lady her paper. She thanked me for the paper and gave me a bag of biscuits she had made herself. I thanked her and ate the biscuits as I continued my route.
After several biscuits, I ________an envelope and pulled it out of the bag. When I opened the envelope, I was shocked. Inside were the seven dollars and a short note that said, "I'm proud of you."
1.A. word B. lesson C. subject D. song
2.A. smooth B. solid C. soft D. light
3.A. back B. age C. sound D. turn
4.A. excited B. happy C. sad D. scared
5.A. discoveredB. excused C. praised D. remembered
6.A. you B. me C. him D. her
7.A. count B. find C. save D. spend
8.A. note B. book C. magazine D. poster
9.A. threw B. handed C. offered D. bought
10.A. sounded B. smelled C. felt D. tasted
— Your T-shirt is so cool. Could you tell me ________________ ?
— I bought it at the department store near my home.
A. where you buy it
B. where do you buy it
C. where you bought it
D. where did you buy it
A new library in my college next year.
A. builds B. built C. is built D. will be built
