题目内容
【题目】When I was a boy there were no smart phones, and our television only got one channel clearly. Still, I never felt bored. The fields, hills and woodlands around my home were the perfect playground whose adventures were only limited by my imagination. I can remember once hiking to nearby lake and walking slowly around it. At the back of it I was amazed to find an old dirt road that I had never seen before. It was full of muddy tyre tracks and deep woods bordered it on both sides, but exploring it still seemed like a fine adventure.
I walked on and on for what seemed like hours. I was sure my guardian angel was whispering in my ears "turn around and head back home", but I was stubborn and walked on. There was still neither a car nor a house in sight I noticed that the sun was starting to go down and I grew scared I didn't want to end up trapped on this road, and I was worried that it would be dark before I could make my way back to the lake again.
I continued to walk on with something growing inside of me. My heart was pounding and my legs were aching. I was almost in tears when I saw something in the distance. It was a house that I recognized. I jumped up and down and laughed out loud. It was still over a mile away, but my legs felt like feathers and I hurried back to my house in no time. I walked in with a big smile on my face just in time for dinner. Then I ended my adventure with a good night's sleep.
I often thought of that experience recently. Actually, in our life, all roads, no matter how they twist and turn, can lead us home again. They can lead us to our homes in our hearts. May you always walk your path with love! May you always help your fellow travelers along the way! And may your roads always lead you home again!
【1】Why did the author hardly feel bored when he was young?
A. He could watch TV all day
B. He could have fun in nature.
C. He had many friends to play with
D. He used to explore the old dirt road
【2】What does the underlined word "something" in Paragraph 3 probably refer to?
A. Doubt
B. Hope
C. Fear.
D. Courage
【3】How did the author feel when he was exploring the dirt road?
A. He was contradictory in mind.
B. He was unconscious of danger ahead.
C. He was worried to be trapped in the woods.
D. He was afraid of being scolded by his parents.
【4】What may be the best title for the passage?
A. Every Effort Is Worthwhile.
B. All Roads Lead Home.
C. Be Determined in Your Life.
D. Be Brave to Adventure.
【答案】
【1】B
【2】C
【3】A
【4】B
【解析】所有的路都是回家的路。这辈子所有的路不管怎样迂回曲折,最终都会引导着我们回家,有的是回到这里,回到我们物质层面的家,有的是回到我们心灵的家园。
【1】B
推理判断题。根据第一段第二、三句Still, I never felt bored. The fields, hills and woodlands around my home were the perfect playground whose adventures were only limited by my imagination.可知,小时候作者从大自然中寻找快乐,所以从来不感到无聊。故选B。
【2】C
词义猜测题。根据第三段第二、三句My heart was pounding and my legs were aching. I was almost in tears when I saw something in then distance.可知,作者内心渐渐地恐惧起来。推知,划线词的意思是“害怕,恐惧”,故选C。
【3】A
推理判断题。根据第一段最后两句At the back of it I was amazed to find an old dirt road that I had never seen before. It was full of muddy tyre tracks and deep woods bordered it on both sides, but exploring it still seemed like a fine adventure.可知,探索这条泥土路似乎是一种冒险,所以他心里是矛盾的。根据句意可知选A。
【4】B
主旨大意题。根据最后一段中I often thought of that experience recently. Actually, in our life, all roads, no matter how they twist and turn, can lead us home again. They can lead us to hey can lead us to our homes in our hearts. 我记得最近见过的一则标语是这样说的:“所有的路都是回家的路。”此言不虚,这辈子所有的路不管怎样迂回曲折,最终都会引导着我们回家,有的是回到这里,回到我们物质层面的家,有的是回到我们心灵的家园。可知,所有的路都通向家。故选B。
【题目】We see the world in three dimensions. Now, we can print in three dimensions, too, thanks to a manufacturing process: 3D printing.
3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file.
The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive (连续的) layers of material until the object is created. Each of these layers can be seen as a thinly sliced horizon till (水平的) cross-section of the eventual object. Today’s 3D printers are being used to print everything from design models to jewelry, crafts, product parts, body parts, and even food.
3D printing starts with making a virtual design of the object you want to create. This virtual design is for instance a CAD (Computer Aided Design) file. This CAD file is created using a 3D modeling application or with a 3D scanner (to copy an existing object). A 3D scanner can make a 3D digital copy of an object.
You will have to prepare a 3D model before it is ready to be 3D printed. This is what they call slicing. Slicing is dividing a 3D model into hundreds or thousands of horizontal layers and needs to be done with software.
Sometimes a 3D model can be sliced from within a 3D modeling software application. It is also possible that you are forced to use a certain slicing tool for a certain 3D printer.
When the 3D model is sliced, you are ready to feed it to your 3D printer. This can be done via USB. SD or WiFi. It really depends on what brand and type 3D printer you have.
When a file is uploaded in a 3D printer, the object is ready to be 3D printed layer by layer. The 3D printer reads every slice (2D image) and creates a three dimensional object.
Before you pick up a 3D printer and experimenting in the 3D world, consider how big the objects you might want to create. If your goal is to print foot-long rulers, you’ll fall short of that goal if the printer you choose can only handle objects smaller 6 inches in height and width.
Another reality check is print speed. You’ll be able to knock out a day’s worth of chores (琐事) while the printer is running, with a typical 4-inch model requiring as many as 12 hours to print. As with ordinary printers, print speed also depends on how well it prints.
Title: A Beginners’ Guide to 3D Printing
What is 3D printing? | 3D printing is a process of making three-dimension objects out of a digital file. An object created with 3D printing 【1】 of a number of layers of material. |
How does 3D printing 【2】? | The first 【3】is to make a virtual design of your 【4】 object. A 【5】 3D model is sliced into a huge number of layers with software or some 【6】 for a certain 3D printer. The sliced model is 【7】 to a 3D printer The 3D printer 【8】 the layers into an entire object step by step. |
What else do you need to know? | The【9】of what you intend to make is a factor in your choice of a 3D printer. Print speed is associated with print 【10】. |