题目内容
【题目】Although Socrates (苏格拉底) was poor all his life, he never asked his pupils to pay for their lessons. He taught for the love of 【1】 (wise), not for money. And 【2】 he said was always new and worth hearing.
But his unusual ways of teaching and his demand that students always ask questions made him some 【3】 (danger) enemies. The rulers did not want to be questioned. So they falsely accused Socrates 【4】 teaching young men bad things and led 【5】 (they) to ignore religion. In fact, Socrates was a very religious man. His enemies had him 【6】 (arrest), and he was sentenced to death by poisoning.
During the 30 days before he was put to death, his friends and pupils 【7】 (allow) to visit him in his prison. They were astonished to find that he was calm and had no fear of dying. When the deadly poison was 【8】 (eventual) brought to Socrates, his friends were in 【9】 (tear), but Socrates raised the cup and drank it as if it were 【10】 glass of wine.
【答案】
【1】wisdom
【2】what
【3】dangerous
【4】of
【5】them
【6】arrested
【7】were allowed
【8】eventually
【9】tears
【10】a
【解析】本文介绍了古希腊哲学家苏格拉底的教学理念及不幸遭遇。
【1】考查名词。of后接名词作宾语,此处指“智慧的爱”,wise的名词形式是wisdom,故填wisdom。
【2】考查代词。what在句中引导主语从句,在主语从句中作say的宾语,表示“……说的话”,故填what。
【3】考查形容词。修饰名词enemies用形容词dangerous,表示“危险的敌人”,故填dangerous。
【4】考查固定短语accuse…of…“指控,控告”,此处指他们错误地指控苏格拉底教给学生坏事。故填of。
【5】考查代词。动词led后用宾格的人称代词作宾语,故填them。
【6】考查过去分词。have sth. done “使某事被做,让别人做某事”,此处had him arrested表示“派人逮捕他”,故填arrested。
【7】考查时态语态。句中主语friends and pupils与谓语动词allow是被动关系,此处做谓语,与全文时态一致用一般过去时的被动语态,故填were allowed。
【8】考查副词。此处修饰动词brought应用副词,指致命的毒药最后被带给苏格拉底,故填eventually。
【9】考查名词。此处in tears意为“含着泪”,故填tears。
【10】考查冠词。此处表示“一杯”,a glass of,故填a。
【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】. |